625 Main Street

(Yes, I took these photos on different days!)
This former gas station was erected in late 1962 for the Magnolia Petroleum Co.

The Kerrville Mountain Sun of August 12, 1962, reported, "The Temple Lumber Co. of Kerrville was low bidder and awarded the contract by the Magnolia Petroleum Co. for the construction of a new station at the corner of Main and Sidney Baker Streets. ... workmen will demolish the old station at the site, and the new $12,500 structure is scheduled for completion by Dec. 10. "

Magnolia Petroleum became part of Mobil Oil in 1959.  A Mobil station operated here into the 1990s. 
(I do not know how it is that Magnolia Petroleum was building a station after it was merged into Mobil, but this is how it was reported in the newspaper.)