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Guide to digital resources
Here are some suggested links to start you on your search for geospatial and numeric data. There are links to additional geospatial data clearinghouses on the GIS subject guide and links to aerial photos on the Maps subject guide. If you need assistance with finding of using numeric data files use the Numeric data subject guide.
Download old print versions as well as post-2010 digital version of 1:24k, 1:48k, 1:62k, 1:100k and 1:250k topo sheets
View, select and download pre-2010 24k, 48k, 62k, 100k, 250k topo sheets in either JPG, KMZ, GeoPDF, GeoTIFF formats
PDF brochure depicting all the different symbols used on USGS topo maps. (takes a few seconds to download)
Features Shown on Topographic Maps
More than you'll ever want to know about the features and symbols printed on USGS topographic maps.
What's on a USGS topo map
USGS PDF document on the information contained in the margins of a USGS topo sheet and what it all means.
Air Photos/Remote Sensing
USGS Earth Explorer
Air photos and Landsat imagery from USGS. You can view any items you find on his site, but you will need to create your own FREE user account to download photos or imagery.
Links to different collections of satellite imagery. Most can be found on EarthExplorer.
New York Orthoimagery
Down load aerial photos of New York State from 1995 to now. Use "Direct Download" link. There is also a link to the GIS web mapping service for the newest air photo layers
New York State - Historical Aerial Photographs
New York State - coverage is by county from the 30's to the 60's
Four simultaneous users. Users must also create their own personal profile.
Application for mapping, analytics, and data visualization of variables such as demographics, employment, housing, market segments, businesses, consumer spending, brand preferences, technology, and public health. Includes data from Nielsen Claritas, Dun and Bradstreet, Simmons, GFK MRI, Easy Analytic Software (EASI), and Applied Geographic Solutions.
Geographic information system with policy-related data about demographics, real estate, crime, income, jobs, education, energy, and more.
Tool for creating maps and visualizations related United States demographics.
Census Data website
This site is optimized for use with the Chrome browser.
Newest version for finding US Census data. This is the replacement for American Factfinder.
A large selection of vector map files and demographic data files
National Historical Geographic Information System
ESRI Virtual Campus list of FREE web classes
Sign up for one of these FREE recorded webinars.
Lessons for ArcGIS Online & Pro
There are 24 available lessons to take here using the ArcGIS Desktop, ArcGIS Online or ArcGIS Pro software platform. You will need an existing ArcGIS Online username and password to access the lessons available here. Contact John Olson for more information.