1914 - FRANK MEYER

Frank Nicholas Meyer (1875-1918) was an explorer for the United States Department of Agriculture. He went on several expeditions to Europe, Russia and East Asia collecting specimens (this lemon was named after him, for example).

He was in Lanzhou in December 1914, and took this photo of Zhongshan Bridge (the arches were added in 1954): 

Picture
“Iron bridge over a ice choked river with buildings on the hills in the background”
Picture
The scene in 2009
Meyer noted that “the water from this river is drunk unfiltered and the waste of the city is deposited into this river again, thus making the people immune from intestinal diseases unless they should die before.”