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....
1935. Project: S-12-198 Scale: 1:1200 Drainage basin: Delaware River Image is from a copy of the original on Mylar. Drawn by E.S. Becker Drawn date April...
1936. 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....