University of Bristol - Historical Photographs of China reference number: Ro-n0990. Yu Hung-Chun (1898-1960), widely known as O.K. Yui, was Mayor of Shanghai from April to November 1937. Source: https://en.wikipedia.org/wiki/Yu_Hung-Chun. See Ro-n0656, Ro-n0657, Ro-n0658, Ro-n0660, Ro-n0989, Ro-n0991, Ro-n0992.
Yu Hongjun (O.K. Yui 俞鴻鈞), Mayor of Shanghai, with his wife