Merrill, Robert H., 1881-1955, “Shan Hai Kwan donkey train on top of wall,” Digital Collections, accessed December 6, 2025, https://digitalcollections.library.gvsu.edu/document/52511.
Black and white lantern slide of a group of caucasian men in suits and hats riding donkeys at the Shan Hai Kwan (Shanhaiguan) gate of the Great Wall of China.