Silverprint photograph, 7 ¾ x 9 ¾, Passenger Service car; Portland – Salem run (Passenger service car generally involves vehicles that carry a number of people, generally 12 or less (including the driver), for hire; equates to taxis and shuttles today. . This came from an album of various motorcoaches, mounted on linen, but was used in promoting and advertising tires.   
Angelus photographer’s imprint. The Angelus Studio, initially as the Angelus Commercial Photo Company, was a professional photography company in Portland, Oregon, and was established around 1911. It was known for documenting Portland,  Oregon landmarks, and various commercial activities. The studio acquired the work of earlier photographers like George M. Weister (1862-1922) and Arthur M. Prentiss (dates unknown), who later became a key figure in the studio. 
The 1920s saw a significant shift in interurban transportation, as the rise of the automobile and the development of better roads led to the decline of electric interurban railway systems and the emergence of interurban motorcoaches.  The 1920s witnessed the establishment of numerous urban motor coach companies, often targeting higher-end riders with premium fares and offered more comfortable and maneuverable vehicles, express routes, and access to areas not served by street railways. The motor coach industry was highly competitive, with both independent companies and subsidiaries of existing street railways vying for passengers. Some railroads even ran their own bus operations to compete with or acquire motor carriers.
Back is blank, period linen backed, light crease tip b/r corner, overall Fine condition.