Henry Sorg Frank better known as Henry S. Frank made his way to China in the 1920s and started off as a missionary teacher at Lingnan University in Canton (Guangzhou). He would spend the next 25 years at Lingnan rising up from lecturer to Professor and to the Head of the Chemistry Department and Provost. In 1951, he was the last member of the foreign staff to leave Lingnan University. He returned to the United States and soon joined the Board of Trustees of Lingnan University based in New York.
When Lingnan University moved to Hong Kong due to Sino-Japanese hostilities, Henry S. Frank relocated as well and was present during the fall of Hong Kong in 1941. He was interned in Stanley Camp and later repatriated with other Americans in 1942. Henry S. Frank returned to China after the end of the Pacific War.
Obituary/Memorial: https://www.findagrave.com/memorial/90894437/henry-sorg-frank
Source
1. Photo of Henry S. Frank in Stanley Camp: https://hkupress.hku.hk/image/catalog/pdf-preview/9789888028535.pdf