1935. Project: S-F2-198 Scale: 1:600 Connects to Sheets: 13 and 15 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn Feb 20, 1935 Che...
1935. Project: S-F2-198 Scale: 1:600 Connects to Sheets: 14 and 17 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn March 1, 1935 Ch...
1935. Project: S-F2-198 Scale: 1:600 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn March 8, 1935 Checked April 11, 1935 includes ...
1935. Project: S-F2-198 Scale: 1:600 Connects to Sheets: 17 and 18 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn March 7, 1935Che...
1935. Project: S-F2-198 Scale: 1:600 Connects to Sheets: 17 and 19 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn March 15, 1935 C...
1935. Project: S-F2-198 Scale: 1:600 Connects to Sheets: 18 and 20 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn March 20, 1935 C...
1935. Project: S-F2-198 Scale: 1:600 Connects to Sheet: 19 and 21 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn Dec. 18, 1934 Che...
1935. Project: S-F2-198 Scale: 1:600 Connects to Sheets: 20 and 22 Image is from a copy of the original on Mylar. Drawn by G. Betz Drawn April 1, 1935 Ch...
1938. Project: 1782-0 Scale: 1:2400 Drainage Basin: Delaware River Image is from a copy of the original on Mylar. Drawn by J.D. Stone. Sept. 8, 1938. See...