1936. Project: ST-70 Scale: 1:120 horizontal, 1:48 vertical Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E.S. B...
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1935. Project: ST-70 Scale: 1:48 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E.S. Becker Date July 1936 Approved.
1936. Project: S-F2-198 Scale: 1:1200 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E.S. Becker 10-30-36 All bea...
1936. Project: S-F2-198 Scale: 1:48 (most), 1:48 vertical 1:1200 horizontal (top drawing) Drainage basin: Delaware River Image is from a copy of the orig...
1935. Project: S-F2-198 Scale: 1:1200 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E.S. Becker June 1935 date d...
1935. Project: S-F2-198 Scale: horizontal: 1:1200, vertical 1:48 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by ...
1935. Project: S-F2-198 Scale: 1:1200 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E.S. Becker Drawn June 1935 ...
1936. Project: S-F2-198 Scale: Horizontal 1:1200, Vertical 1:36 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E....
1935. Project: S-F2-198 Scale: 1:1200 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E.S. Becker Drawn date 3-8-3...
1935. Project: S-F2-198 Scale: Horizontal 1:1200, Vertical 1:48 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by H....