Links of Professional Interest
Illinois Society of Professional Engineers
The Illinois Professional Land Surveyors Association
State of Illinois Home Page
Illinois Department of Transportation
Illinois State Geological Survey
Federal Highway Administration
Army Corps of Engineers
National Society of Professional Engineers
Federal Township Plats of Illinois (1804 - 1891)
Quality Based Selection of Design Professionals
FEMA - New Elevation Certificate
Illinois Land Surveyors Act, Section 1270.56
NOAA NOS - National Geodedic Survey Baselines in Illinois
ALTA/ACSM Land Title Survey Standards (2005)
Seiler Instrument Company Midwest RTK Networks