New B&O Budd Built Daylight Speedliners Posters
From www.railphotoexpress.biz; The Daylight Speedliner was A named passenger train of the Baltimore and Ohio Railroad (B&O) in the 1950s and early 1960s. Equipped with three or four streamlined, self-propelled Budd Company,of Philadelphia Pennsylvania, Rail Diesel Cars (RDCs) coupled together. It initially operated between Philadelphia, Pennsylvania and Pittsburgh, Pennsylvania, via Baltimore, Maryland, and Washington, D. C., as Trains #21–22.
The Baltimore and Ohio Railroad had been using RDCs in local Baltimore–Washington, D.C., commuter passenger service since 1950. Pleased with their reliability and lower operating costs compared to heavyweight passenger trains drawn by steam locomotives, the B&O decided in 1955 to replace its money-losing Washingtonian steam train with RDCs, ordering four RDC-1s with reclining coach seats and two RDC-2s with baggage compartments. The Rail Diesel Cars equipped Daylight Speedliner entered service on October 28, 1956, and reduced the railroad's operating expenses by almost half, compared to the Washingtonian train it replaced.