Merrill, Robert H., 1881-1955, “Tientsin-Pukow RR Yellow River bridge,” Digital Collections, accessed December 6, 2025, https://digitalcollections.library.gvsu.edu/document/52621.
Black and white lantern slide of a railroad bridge entrance. A sign on top of the bridge reads "Erbaut 1909-1912, Maschinenfabrik Augsburg-Nurnberg A.C. Werk Gustavsberg."