Prairie Research Institute University of Illinois at Urbana-Champaign

Illinois County Geologic Maps
ISGS HOME
ISGS Books
Champaign County Area Publications
ISGS Bulletins
ISGS Circulars
Geoscience Educational Series
Geoscience Field Trip Guidebooks
Guidebook Series
Illinois State Park Geology Series
Illinois Petroleum
ISGS Posters
ISGS Walking Guides & Misc
ISGS Maps
Coal Maps
Illinois County Geologic Maps
Illinois Geologic Quadrangle Maps
Illinois Map Series
Oil and Gas Development Maps
Oil and Gas Structure Maps
USGS Maps
USGS 7.5 minute Traditional Topos
Customer Service

Search

Due to Covid-19

We are working remotely and hope to ship orders once a week, but due to the circumstances it may take slightly longer. Print on Demand items and maps may also take longer.

For questions or tax exempt orders please email us at sales@prairie.illinois.edu

 

County mapping is carried out at the ISGS under a variety of programs. The programs exist for different purposes and require different levels of scientific review. Maps are published in specific Series based on the program under which they were created and the corresponding level of review. For further information and Series descriptions please click here.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
OFS 2000-3 Boone/Winnebago County Bedrock Geology
$7.50
McGarry, C.S., 2000, Bedrock Geology of Boone and Winnebago Counties, Illinois: Illinois State Geological Survey, Open File Series, OFS 2000-3, 1:100,000.
Quantity
OFS 2000-2 Boone/Winnebago County Bedrock Topography
$7.50
McGarry, C.S., 2000, Bedrock Topography of Boone and Winnebago Counties, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2000-2, 1:100,000.
Quantity
ICGM Bureau County Surfical Eolian & Outwash Sand Deposits
$7.50 $5.00 On Sale!
Distribution of Surficial Eolian and Outwash Sand Deposits, Bureau County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Bureau County-SS, 1:100,000. One 28.5" × 31" map sheet contains map, legends, and descriptive text. Miao, X., 2009
Quantity
OFS 1997-13i Carroll County Aquifer Sensitivity
$7.50
Johnstone, P.D., 2003, Aquifer Sensitivity Map of Tazewell County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-6d, 1:62,500.
Quantity
OFS 1997-13d Carroll County Bedrock Geology
$7.50
McGarry, C.S., 1997, Bedrock Geology of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13d, 1:62,500.
Quantity
OFS 1997-13e Carroll County Bedrock Topograpy
$7.50
McGarry, C.S., 1997, Bedrock Topography of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13e, 1:62,500.
Quantity
OFS 1997-13h Carroll County Data Points
$7.50
McGarry, C.S., 1997, Locations of Data Points of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13h, 1:62,500.
Quantity
OFS 1997-13j Carroll County Land Cover
$7.50
McGarry, C.S., 1997, Land Cover of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13j, 1:62,500.
Quantity
OFS 1997-13k Carroll County Potential Dolomite Resources
$7.50
McGarry, C.S. and D.A. Grimley, 1997, Potential Dolomite Resources of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13k, 1:62,500.
Quantity
OFS 1997-13b Carroll County Quaternary Deposits
$7.50
Grimley, D.A., 1997, Quaternary Deposits of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13b, 1:62,500.
Quantity
OFS 1997-13f Carroll County Shaded Relief
$7.50
McGarry, C.S., 1997, Shaded Relief of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13f, 1:62,500.
Quantity
OFS 1997-13g Carroll County Surface Slopes
$7.50
McGarry, C.S., 1997, Surface Slopes of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13g, 1:62,500.
Quantity
OFS 1997-13a Carroll County Surface Topography
$7.50
McGarry, C.S., 1997, Surface Topography of Carroll County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-13a, 1:62,500.
Quantity
ICGM Champaign County Surface Topography
$7.50 $5.00 On Sale!
ICGM Champaign County ST
LiDAR Surface Topography of Champaign County, Illinois, 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 43" x 41" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
ICGM DuPage Surface Topography
$7.50 $5.00 On Sale!
ICGM DuPageST
LiDAR Surface Topography of DuPage County, Illinois, 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 32" x 33" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
Statemap HardinCountyBG
$20.00
Bedrock Geology, Hardin County Illinois: Illinois State Geological Survey, USGS-STATEMAP contract report, 2 sheets, 1:24,000, report, 7 p. Authors: Seid, M.J., and Devera, J.A., 2014
Quantity
ICGM Henry County Surficial Geology
$12.50 $5.00 On Sale!
Surficial Geology of Henry County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Henry County-SG, 1:62,500, report, 4 p. One 42" × 35" map sheet contains map and legends; report contains descriptive text with 3 tables. Anderson, R.C., and Miao, X., 2011
Quantity
ICGM Henry County Surface Topography
$7.50 $5.00 On Sale!
LiDAR Surface Topography of Henry County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Henry-ST, 1:62,500. One 44" × 35" map sheet; includes map, legends and descriptive text with 4 figures. Domier, J.E.J., and Luman, D.E. 2012.
Quantity
OFS 2000-8i JoDaviess County Aquifer Sensitivity
$15.00
McGarry, C.S. and M.H. Riggs, 2000, Aquifer Sensitivity Map, Jo Daviess County, Illinois: Illinois State geological Survey, Open File Series, OFS 2000-8i, 1:62,500.
Quantity
C589_map1_0.jpg Circular 589 Characterization of karst terrain and regional tectonics using remotely sensed data in Jo Daviess County, Illinois
$15.00
C589

Samuel V. Panno, Donald E. Luman, and Dennis R. Kolata 29 pp., large-scale map, and digital appendix

Jo Daviess County in northwestern Illinois is part of the Driftless Area, which includes portions of Wisconsin, Minnesota, and Iowa. Here, the soils and unconsolidated materials are relatively thin, and coupled with the highly fractured dolomite bedrock, create a geologic setting for a prolific karst aquifer within the region. During the extreme summer drought of 2012, mysterious vegetated lines began appearing in agricultural fields within Jo Daviess County. The presence of these vegetated crop lines was an ephemeral event lasting only a few months, and ISGS researchers responded quickly to document it. The results of on-site investigations and image interpretation of aerial photography acquired from June to October determined that the vegetated crop lines are an accurate reflection of the buried bedrock fracture system in northwestern Illinois, which had heretofore been restricted to direct observation in available road cuts, quarries, and bedrock outcrops. Digitized data sets of these vegetated crop lines can be used in conjunction with alignments of cover-collapse sinkholes and mine diggings to better characterize the geometry and character of the karst aquifer within the Driftless Area of northwestern Illinois, and to better understand the regional tectonics of Illinois and nearby states.


Quantity
OFS 2000-8d JoDaviess County Bedrock Geology
$7.50
McGarry, C.S., 2000, Bedrock Geology Map, Jo Daviess County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2000-8d, 1:62,500.
Quantity
OFS 2000-8e JoDaviess County Bedrock Topography
$7.50
McGarry, C.S. and M.H. Riggs, 2000, Bedrock Surface Topography Map, Jo Daviess County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2000-8e, 1:62,500.
Quantity
OFS 2000-8h JoDaviess County Data Points
$7.50
Riggs, M.H. and C.S.McGarry, 2000, Map Showing Location of Data Points, Jo Daviess County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2000-8h, 1:62,500.
Quantity
OFS 2000-8c JoDaviess County Drift Thickness
$7.50
Riggs, M.H. and C.S.McGarry, 2000, Map Showing Thickness of Quaternary Deposits, Jo Daviess County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2000-8c, 1:62,500.
Quantity
OFS 2000-8j JoDaviess County Land Cover
$7.50
McGarry, C.S., 2000, Land Cover Map, Jo Daviess County, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2000-8j, 1:62,500.
Quantity
OFS 2000-8g JoDaviess County Shaded Relief
$7.50
McGarry, C.S. and M.H. Riggs, 2000, Shaded Relief Map of Bedrock Surface, Jo Daviess County, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2000-8g, 1:62,500.
Quantity
OFS 2000-8b JoDaviess County Surficial Geology
$7.50
Riggs, M.H., 2000, Surficial Geology Map, Jo Daviess County, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2000-8b, 1:62,500.
Quantity
OFS 2000-8a JoDaviess County Surface Topography
$7.50
Riggs, M.H., S. Medlin, and C.S.McGarry, 2000, Land Surface Topography Map, Jo Daviess County, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2000-8a, 1:62,500.
Quantity
ICGM Jo Daviess County Surface Topography
$7.50 $5.00 On Sale!
ICGM Jo Daviess County ST
LiDAR Surface Topography of Jo Daviess County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 42" x 35" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
ICGM Kane County-3 Dimensional Geologic Model
$7.50 $5.00 On Sale!
Three-dimensional Geologic Model, Kane County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Kane-3D. One 27" × 33" map sheet; includes 3-D geologic model and descriptive text with figure. Abert, C.C., Dey, W.S., Davis, A.M., and Curry, B.B. 2007.
Quantity
ICGM Kane County-Aquifer Sensitivity to Contamination
$7.50 $5.00 On Sale!
Aquifer Sensitivity to Contamination, Kane County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Kane-AS, 1:100,000. One 27" × 33" map sheet; includes map, legends and descriptive text. Dey, W.S., Davis, A.M., and Curry, B.B., 2007.
Quantity
ICGM Kane County-Bedrock Geology
$7.50 $5.00 On Sale!
Bedrock Geology, Kane County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Kane-BG, 1:100,000. One 27" × 33" map sheet; includes map, legends and descriptive text. Dey, W.S., Davis, A. M., Curry, B., 2007
Quantity
ICGM Kane County-Geologic Cross Sections
$15.00 $7.50 On Sale!
Geologic Cross Sections, Kane County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Kane-CS, 1:100,000. Two 27" × 33" map sheets; includes map, legends, and descriptive text. Dey, W.S., Davis, A.M., Curry, B.B., and Abert, C.C., 2007.
Quantity
ICGM Kane County-Major Quaternary Aquifers
$7.50 $5.00 On Sale!
Major Quaternary Aquifers, Kane County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Kane-QA, 1:100,000. One 27" × 33" map sheet; includes map, legends and descriptive text. Dey, W.S., Davis, A.M., and Curry, B.B. 2007.
Quantity
OFS 1990-2f Kane County Soil Drainage
$7.50
Greenpool, M.R., 1990, Soil Drainage Characteristics of Kane County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1990-2f, 1:62,500.
Quantity
STMP Kane County Surficial Geology
$22.50
Surficial Geology of Kane County, Illinois Authors: Curry, B., Grimley, D., and Bruegger, A., 2013.
Quantity
ICGM Kane County Surface Topography
$7.50
ICGM Kane County ST
LiDAR Surface Topography of Kane County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 37" x 38" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
OFS 2003-12 Lake County 3D
$15.00
Leetaru, H.E., 2003, 3-D Visualization of Bedrock Resources in Lake County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-12, 2 sheets.
Quantity
Statemap Lake County SG
$15.00
Surficial Geology of Lake County, Illinois and adjoining areas: Illinois State Geological Survey, USGS-STATEMAP contract report, 2 sheets, 38" x 35", 1:62,500. Authors: Barnhardt, M.L., Stumpf, A.J., Thomason, J.F. Brown, S.E., and Hansel, A.K., 2015
Quantity
ICGM Lake County Surface Topography
$7.50
LiDAR Surface Topography of Lake County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Lake-ST, 1:62,500. One 37" × 33" map sheet; includes map, legend, and descriptive text with 4 figures. Domier, J.E.J., and Luman, D.E., 2013.
Quantity
OFS 1999-1e Lee County Bedrock Geology
$7.50
McGarry, C.S., 1999, Bedrock Geology of Lee County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1999-1e, 1:62,500.
Quantity
OFS 1999-1d Lee County Bedrock Topography
$7.50
McGarry, C.S., 1999, Bedrock Topography of Lee County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1999-1d, 1:62,500.
Quantity
OFS 1999-1a Lee County Data Points
$7.50
Nagy, R.J., 1999, Locations of Data Points in Lee County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1999-1a, 1:62,500.
Quantity
OFS 1999-1f Lee County Quaternary Deposits
$7.50
Nagy, R.J., 1999, Quaternary Deposits in Lee County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1999-1f, 1:62,500.
Quantity
OFS 1999-1c Lee County Shaded Relief
$7.50
Nagy, R.J., 1999, Shaded Relief in Lee County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1999-1c, 1:62,500.
Quantity
ICGM Lee County Surficial Eolian & Outwash Sand Deposits
$7.50 $5.00 On Sale!
Distribution of Surficial Eolian and Outwash Sand Deposits, Lee County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Lee County-SS, 1:100,000. One 28.5" × 29" map sheet contains map, legends, and descriptive text. Miao, X., 2009.
Quantity
ICGM Lee County Surface Topography
$7.50 $5.00 On Sale!
ICGM Lee County ST
LiDAR Surface Topography of Lee County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 40" x 36" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
OFS 1999-1b Lee County Surface Topography
$7.50
Nagy, R.J., 1999, Surface Topography in Lee County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1999-1b, 1:62,500.
Quantity
IPGM Madison County- Surficial Geology
$15.00
Surficial Geology of Madison County, Illinois: Illinois State Geological Survey, Illinois Preliminary Geologic Map, IPGM Madison County-SG, 1:100,000. Authors: Grimley, D.A. and Phillips, A. C., 2006
Quantity
OFS 1995-12 McHenry County Surface Topography
$7.50
McLean, M.M., M.D. Kelly, and C.S. McGarry, 1995, Surface Topography of McHenry County: Illinois, Illinois State Geological Survey, Open File Series, OFS 1995-12, 1:62,500.
Quantity
ICGM McHenry County Surface Topography
$7.50
ICGM McHenry County ST
LiDAR Surface Topography of McHenry County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 39" x 31" map sheet; contains map, legends, descriptive text, and 4 figures
Quantity
OFS 1997-1d McLean County Bedrock Topography
$7.50
McLean, M.M., M.D. Kelly, and M.H. Riggs, 1997, Topography of the Bedrock Surface in McLean County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-1d, 1:100,000.
Quantity
OFS 1997-1c McLean County Data Points
$7.50
McLean, M.M. and M.H. Riggs, 1997, Locations of Data Points in McLean County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-1c, 1:100,000.
Quantity
OFS 1997-1e McLean County Drift Thickness
$7.50
McLean, M.M., M.D. Kelly, and M.H. Riggs, 1997, Thickness of Quaternary Deposits in McLean County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-1e, 1:100,000.
Quantity
OFS 1997-1b McLean County Extraction Operations
$7.50
McLean, M.M., M.D. Kelly, and M.H. Riggs, 1997, Extraction Operations in McLean County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-1b, 1:100,000.
Quantity
OFS 1997-1a McLean County Surface Topography
$7.50
McLean, M.M. and M.H. Riggs, 1997, Ground Surface Topography of McLean County, Illinois: Illinois State Geological Survey, Open File Series, OFS 1997-1a, 1:100,000.
Quantity
ICGM Monroe County Sinkhole Distribution
$12.50 $5.00 On Sale!
Distribution and Associated Karst Features of Monroe County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM Monroe County-SD, 1:62,500, report, 12 p. One 31" × 35" map sheet; includes map, legends, and 2 figures. Panno, S.V., and Luman, D. E., 2012.
Quantity
ICGM Monroe County Surface Topography
$7.50 $5.00 On Sale!
ICGM Monroe County ST
LiDAR Surface Topography of Monroe County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 35" x 33" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
Statemap Pope County Bedrock Geology
$20.00

Bedrock Geology of Pope County Illinois: Illinois State Geological Survey, USGS-STATEMAP Two 35" x 52 " map sheets; sheet 1 contains map, legends, and 2 figures; sheet 2 includes descriptive stratigraphic column and cross section; report contains descriptive text and 15 figures.


Quantity
ICGM St. Clair County Surficial Geology
$15.00
Surficial Geology of St. Clair County, Illinois: Illinois State Geological Survey, Illinois County Geologic Map, ICGM St. Clair-SG, 2 sheets, 1:62,500. Two 42" × 35" map sheets; sheet 1 contains map and legends; sheet 2 contains descriptive text with 6 figures, and 3 cross sections. Grimley, D.A., and Phillips, A.C., 2011.
Quantity
ICGM St. Clair County Surface Topography
$7.50 $5.00 On Sale!
ICGM St. Clair County ST
LiDAR Surface Topography of St. Clair County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 39" x 36" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
OFS 2003-6d Tazewell County Aquifer Sensitivity
$7.50
Johnstone, P.D., 2003, Aquifer Sensitivity Map of Tazewell County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-6d, 1:62,500.
Quantity
OFS 2003-6h Tazewell County Bedrock Topography
$7.50
Johnstone, P.D., 2003, Bedrock Topography of Tazewell County, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2003-6h, 1:62,500.
Quantity
OFS 2003-6i Tazewell County Data Points
$7.50
Johnstone, P.D. and C.S. McGarry, 2003, Location of Data Points for Tazewell County, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2003-6i, 1:62,500.
Quantity
OFS 2003-6b Tazewell County Drift Thickness
$7.50
Johnstone, P.D., 2003, Thickness of Quaternary Deposits of Tazewell County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-6b, 1:62,500.
Quantity
OFS 2003-6e Tazewell County Resource Extraction
$7.50
Johnstone, P.D., 2003, Resource Extraction and Landfill Activities of Tazewell County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-6e, 1:62,500.
Quantity
OFS 2003-6f Tazewell County Shaded Relief
$7.50
Johnstone, P.D. and C.S. McGarry, 2003, Shaded Relief Map of Tazewell County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-6f, 1:62,500.
Quantity
OFS 2003-6c Tazewell County Surface Slopes
$7.50
Johnstone, P.D., 2003, Surface Slopes of Tazewell County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-6c, 1:62,500.
Quantity
OFS 2003-6a Tazewell County Surficial Geology
$7.50
Johnstone, P.D., 2003, Surficial Geology of Tazewell County, Illinois: Illinois State Geolgical Survey, Open File Series, OFS 2003-6a, 1:62,500.
Quantity
OFS 2003-6g Tazewell County Surficial Topography
$7.50
Johnstone, P.D. and C.S. McGarry, 2003, Surficial Topography of Tazewell County, Illinois: Illinois State Geological Survey, Open File Series, OFS 2003-6g, 1:62,500.
Quantity
ICGM Whiteside County Surficial Geology
$12.50 $5.00 On Sale!
Surficial Geology of Whiteside County, Illinois: Illinois State Geological Survey, ICGM Whiteside-SG, 1:62,500, report, 3 p. Authors: Anderson, R.C., and X. Miao, 2013
Quantity
ICGM Whiteside County Surface Topography
$7.50
ICGM Whiteside County ST
LiDAR Surface Topography of Whiteside County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Description: One 45" x 32" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
ICGM Will County Surface Topography
$7.50
ICGM Will County ST
LiDAR Surface Topography of Will County, Illinois 1:62,500. Authors: Domier, J.E.J., and D.E. Luman, 2014 Print on Demand Description: One 42" x 40" map sheet; contains map, legends, descriptive text, and 4 figures.
Quantity
STMP Williamson County Surficial Geology
$20.00

Surficial geology of Williamson County, Illinois: Illinois State Geological Survey, STATEMAP Two 35.5" × 32" map sheets and one 11-page report. Authors: Grimley, David A., Follmer, Leon R., and Nelson, W. John, 2020.


Quantity
STMP Williamson County Bedrock Geology
$20.00

Bedrock geology of Williamson County, Illinois: Illinois State Geological Survey, STATEMAP Two 36" x 30" map sheets and a 65 page report. Author: Nelson, W. John, 2020.


Quantity

PRAIRIE RESEARCH INSTITUTE
615 E. Peabody Drive, Room 137
Champaign, IL 61820
Phone: 217-244-2414

sales@prairie.illinois.edu

Terms of use         Privacy statement


©2021 University of Illinois Board of Trustees. All rights reserved.
For permissions information, contact the appropriate Survey.