The 1907 Rock Island Depot building
The Rock Island Depot building was constructed in 1907 — completed in the same months that Oklahoma transitioned from twin territories (Oklahoma Territory and Indian Territory) to full statehood. The architectural style is a typical early-20th-century railroad station: substantial masonry construction, a peaked roof with extended eaves over the platform, generous interior wood paneling, decorative tile floors in the public waiting areas, and a separate freight section attached to the passenger depot. The Chicago, Rock Island & Pacific Railway (universally called 'the Rock Island') built the station to serve as its El Reno division headquarters.
Rock Island maintained substantial operations in El Reno through the early-to-mid 20th century. The railroad operated a major shop facility on the west side of town, a roundhouse for locomotive servicing, several miles of yard tracks, and a workforce that at peak included over 1,000 employees. El Reno's economy was deeply tied to the railroad, and the surrounding commercial downtown — including the buildings along Choctaw and Bickford Avenue that house Sid's Diner and Robert's Grill today — developed largely in response to the rail-economy workforce.
Passenger service through the depot declined through the 1950s and 1960s as automobile and air travel took over, and the depot was eventually decommissioned. The building sat partially vacant through the 1970s before Canadian County historical preservationists acquired it and undertook a multi-year restoration project. The careful preservation of the original interior woodwork, the decorative tile floors, the lighting fixtures, and the structural details is itself one of the museum's most satisfying exhibits — visitors are walking through a substantially intact 1907 building.