Freer visited Panama Pacific Exposition in San Francisco in April of 1915. During his visit, he met with the dealers C.T. Loo and Pang Tszu-chen who had brought paintings from the collection of Shanghai collector Pang Laichen (Pang Yuanji). Freer purchased 13 of the paintings, 2 of which were transfered to his friends, Eugene and Agnes Meyer.
Charles Lang Freer Papers. FSA A.01. National Museum of Asian Art Archives. Smithsonian Institution, Washington, D.C. Gift of the estate of Charles Lang Freer.