Books by Charles Sumner Heidel:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Heidel, Charles Sumner: Report to the Federal power commission on the uses of the upper Columbia River. (Govt. print. off., 1925), also by Federal Power Commission, Marvin Chase, Warren G. Swendsen, Fred Forbes Henshaw, David Christian Henny, and James Bates Cavanaugh (page images at HathiTrust)- Heidel, Charles Sumner: Report to the Federal power commission on the uses of the upper Columbia River ... (Govt. print. off., 1923), also by Federal Power Commission, Marvin Chase, Warren G. Swendsen, Fred Forbes Henshaw, David Christian Henny, and James Bates Cavanaugh (page images at HathiTrust)
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