The Davis Island Lock and Dam porfolio.
Contributors: Merrill, W. E. 1837-1891.
Publisher: U.S. Army Corps of Engineers
Published: 1985
Place of publication: [Pittsburgh, Pa
Language: eng
Subjects: Davis Island Dam (Pa.) -- History.; Davis Island Lock (Pa.) -- History.
Notes: "In 1889, Colonel William E. Merrill, who designed and supervised the successful construction of the Davis Island Lock and Dam, submitted 18 technical drawings of the project ... The twelve plates in this porfolio have been reproduced from the original drawings housed in Record Group 77 of the National Archives, Washington, D.C."

At head of tite: U.S. Army Corps of Engineers Pittsburgh District.

Foliation: [1] leaf, leaves of plates 1-7, 9, 12-14, 18.