E. 20th Street at 22nd Avenue
This is a real definitive example of a Schnoor Bros. mark from 1915, which I believe is the firm’s first year. P. Schnoor & Son used the same mark, and I have examples from 1911, 1912 and 1913.
Notice that all the 1’s are backwards, and the dash in the date is also a backwards “1.”
E. 24th Street at 21st Avenue
Unlike my previous Powell Bros. Concrete Co. mark, this one has (narrowly) escaped damage. Still looking for one with a date.
1950 E. 21st Street
This is not quite the same as the “Moniz & Chaves” mark I’ve documented before. Also, it’s not misspelled.
2034 E. 25th Street
This is the only Catucci mark I’ve found that includes the address of the firm. The building there still stands with the company name visible on it. Unfortunately this mark doesn’t have a date.
2172 E. 24th Street
Now I have dated marks from Carl Petersen for all years of the 1930s.
2524 Wakefield Avenue
This is my first example of Paul Mortensen using a straight text mark, rather than the curved text with the curlicue. I also have an example of that style from this year, suggesting that he adopted it during 1928.
2548 Wakefield Avenue
Pink concrete appears to have been a brief fad in the early 1920s. I usually don’t see it with dates, though. This gives me a range of dates for G. Musso from 1922 to 1940.
Oakland Underfoot 