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Census Tracts in 1970
District of Columbia —
Census Year 1970 Census Tracts. The dataset contains polygons representing CY 1970 census tracts, created as part of the D.C. Geographic Information System (DC GIS)... -
Built Environment Indicators and Health Map
District of Columbia —
The online tool highlights how close in walking distance DC census tracts are to various features of the built environment spanning nine key drivers--education,... -
County
1974 Lake County Aerial
Lake County, Illinois —
This four foot pixel resolution black and white aerial photography was flown between October 2 and October 10, 1974, at a capture scale of 1": 3,333, flying at an...