1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheets: 68, 70 Image is from a copy of the original on Mylar. Drawn by M Hausen 6/17/36 app...
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1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheets: 69, 71 Image is from a copy of the original on Mylar. Drawn by S. Belihound 6-22-36...
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheets: 70, 72 Image is from a copy of the original on Mylar. Drawn by S. Belihound 7-7-36 ...
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheets: 71, 73 Image is from a copy of the original on Mylar. Drawn by S. Belihound 7-8-36.
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheets: 72, 74 Image is from a copy of the original on Mylar. Drawn by S. Belihound 7-8-36 ...
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheets: 73 ,75 Image is from a copy of the original on Mylar. Drawn by S. Belihound 7-9-36 ...
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheet: 76 Image is from a copy of the original on Mylar. Drawn by M Houser 7/23/36 approved.
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheet: 75 Image is from a copy of the original on Mylar. Drawn by M. Housen 7/23/36 approved.
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheet: 78 Image is from a copy of the original on Mylar. Drawn by M. Housen 7/22/36 approved.
1936. Project: ST-70 Scale: 1:1200 Drainage Basin Connects to sheets: 77, 79 Image is from a copy of the original on Mylar. Drawn by M. Housen 7/24/36 ap...