The Hung-Hsun Ling papers document Ling's life as a railway engineer and his contribution to the development of rail infrastructure in China during the Republican period. The papers include two manuscripts of his autobiographies and 14 photographs depicting him as an engineer taken during and after the construction of various railway projects in China and other locations dating from 1916 to 1965, as well as a portrait of him at age 80. The papers also include five books related to the history and the development of railways in China written in Chinese by Ling from 1954 to 1977.