1. The great railroad revolution: the history of trains in America Wolmar, Christian, New York : PublicAffairs, 2013. HIST456
3. Reluctant heroes: rickshaw pullers in Hong Kong and Canton, 1874-1954 Fung, Chi Ming. Hong Kong : Hong Kong University Press, 2005. HIST298
4. American steam locomotives: design and development, 1880-1960 Withuhn, William L., Bloomington, IN : Indiana University Press ; [2019] HIST456 Three User
