John Stevens may refer to: Architecture and engineering. John Stevens (inventor, born 1749) (1749–1838), American engineer who developed the multitubular boiler engine and the screw propeller. John Stevens (architect) (1824–1881), American architect. John Calvin Stevens (1855–1940), American architect. John Frank Stevens (1853–1943), builder of the Great Northern Railway in the U.S., chief engineer on the Panama Canal. John H. Stevens (1820–1900), built the first house west of the Mississippi in what is now Minneapolis, Minnesota. John Howard Stevens (1879–1958), American architect.
https://en.wikipedia.org/wiki/John_Stevens