This image shows the original tower of the main international airport for the San Francisco Bay Area, known by the assigned letters SFO.
The description states:
1665 — SAN FRANCISCO INTERNATIONAL AIRPORT
Situated on Bayshore Highway 14 miles south of San Francisco. One of the world’s newest and finest airports. Costing more than $15,000,000 it is equipped with all latest motivational and safety devices. Its many facilities include restaurant, coffee shop, newsstand, book shop, souvenier [sic] and gift shops.
–The two planes in the image are both propeller driven aircraft common in that era. The one on the left is most likely a Lockheed Constellation, based on its unusual three part tail design. The one in the foreground is possibly a Douglas DC-6, as this was a common aircraft for Pan Am in this era and location.
This image likely dates from the 1950s.