Photograph of post card of mail car in Milwaukee, Wisconsin
- Car used to carry a postal clerk who sorts mail while the vehicle is moving. A pair of these automobiles, manufactured by the Johnson Service Company, were used for city delivery service in Milwaukee, Wisconsin.
- Photographer: Unknown
- Data Source
- National Postal Museum
- Credit line
- National Postal Museum, Curatorial Photographic Collection Photographer: Unknown
- paper; photo-emulsion