Claysville-01-Pitt ; Claysville- 1 ; Pittsburgh

Statement of responsibility: [Works Progress Administration of Pennsylvania]. Relief on most maps shown by contours and spot heights. WPA Project Numbers: 4483 -- 19666 -- 25734 -- No. 65-23-5001 -- No. 465-23-3-192. Each sheet is named and may have a letter code of A, B, C, or D following the name, corresponding to specific government contracts. These letter codes indicate a particular contract as follows: A = Contract No. 4483; B = Contract No. 65-23-5001 + No. 465-23-3-192; C = Contract No. 19666; and D = Contract No. 25734. Contract 19666 was used for mapping the oil and gas wells involved... Mehr ...