Photograph of Rural Free Delivery wagon with horse in Osseo, Minnesota
The fancifully decorated horse-drawn wagon is marked "Rural Route No. 3, Osseo, Minn[esota]." Rural free delivery carriers did not more than just transport mail. This unidentified carrier would have offered a functioning post office on wheels to customers. The carrier would have brought along stamps and stamped envelopes, money orders and other postal products for sale along the route.
National Postal Museum, Curatorial Photographic Collection