 He became engaged in agricultural pursuits in 1914.He was a member of the Linesville and Meadville Boards of Education from 1920 to 1929, and served as president of the Meadville Chamber of Commerce from 1922 to 1924.Crosby was elected as a Democrat to the Seventy-third, Seventy-fourth, and Seventy-fifth Congresses representing Pennsylvania's 29th congressional district.