Member of the 1972 graduating class at SSU. Budget analyst of the Phillips Petroleum Corporation. Collector of railroad memorabilia.

Chiefly 8" x 10" black and white photographic reprints of railroad engines, cars, and yards documenting electric, diesel and particularly steam railroading in Illinois and the midwest, largely 1930-1942. Railroads include Illinois Terminal; Illinois Central Gulf; Springfield Suburban; Wabash; Illinois Central; Gulf, Mobile and Ohio; Chicago and Alton; Chicago and Eastern Illinois; New York Central; Pennsylvania; Atchison, Topeka and Santa Fe; Chesapeake and Ohio; and others. Also contains color postcards, snapshots, maps, blueprints, timetables, operating rules, brochures, and track charts from these railroads and DiMarco's personal notes.