Detail of East India Archipelago, Western Route to China, Chart No. 5, showing Macao, the Canton River, and Hong Kong. Whampoa Reach was as high as trading vessels were allowed to sail on the Canton River.
New York Times runs a page-length report on Yamei Kin's trip to China to study soy food on USDA's behalf to alleviate the meat shortage of the U.S. during World War I.