Title from portfolio.
Title on map sheets: Census tract/block numbering area outline map (1990).
Distributed to all Regional depository libraries and to Pennsylvania depository libraries selecting Item 156-K-38.
Shipping list no.: 93-0079-P.
"Base map generated using digital data obtained at 1:100,000- scale through a cooperative program with the United States Geological Survey, Department of the Interior."
Includes indexes.
"1990 CPH-3-262A."