(1960). Museum graphic: [Pony Express] (Centennial ed., 1860-1960.). St. Joseph Museum.
Cita Chicago Style (17a ed.)Museum Graphic: [Pony Express]. Centennial ed., 1860-1960. St. Joseph, Mo.: St. Joseph Museum, 1960.
Cita MLA (8a ed.)Museum Graphic: [Pony Express]. Centennial ed., 1860-1960. St. Joseph Museum, 1960.
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