Allegheny River. Preliminary examination of Allegheny and Susquehanna rivers, Pa., report to accompany H. R. 12240 [to authorize preliminary examination of tributaries, sources, and headwaters of Allegheny and Susquehanna rivers in Pennsylvania, where no examination and survey has heretofore been made, with view to control of their floods and regulation and conservation of their waters]; submitted by Mr. Sheppard.

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