2132 Damuth Street
So far I’ve only found Cragun & Cragun marks for 1940 plus the war years.

4015 Brighton Avenue

Balfour Avenue at Rosal Avenue

2130 17th Avenue

1124 E. 20th Street

9th Avenue at Foothill Boulevard
This mark fits between Douglas & Wolfe 1940 and Wolfe 1949. Clearly Douglas left the partnership in one way or another, and R. G. Wolfe chiseled his name off the old stamp before he could have a new one made. This stamp also shows that the partnership started in the 1920s. A lot of information in one spot.

3505 E. 16th Street
A very nice date from C. Valenzuela using all four digits.