Rating current meter at Tientsin
Black and white lantern slide of three men in a small boat guaging the canal water level.
circa 1918-1921
In Copyright
Grand Valley State University. University Libraries. Special Collections & University Archives
Merrill_LS00181
image/jpg
Image
eng
Merrill, Robert H., 1881-1955, “Rating current meter at Tientsin,” Digital Collections, accessed May 13, 2024, https://digitalcollections.library.gvsu.edu/document/52639.