The founders' original, never-realized plans were to extend the line 500 miles (800 km) from the Red River to El Paso, Texas.

[5] The Burlington Northern Railroad abandoned the former QA&P line west of Paducah in 1982.

[5] Freight stops on the QA&P were Red River, Carnes, Quanah, Acme, Lazare, Swearingen, Paducah, Narcisso, Summit (Motley County), Russellville, Roaring Springs, MacBain, Dougherty, Boothe Spur, and Floydada.

[2] Starting in the 1960s, the QLA freight train via Floydada was scheduled to arrive in Los Angeles 38½-to-40 hours after leaving Tulsa.

The railroad's traffic diminished after 1973 when overhead trade took a shorter route via Avard, OK.[6]