
344 45th Street
Bilger was the owner of the Rockridge Shopping Center quarry; Blake was one of his partners. Blake & Bilger stamps are not rare, but they’re usually very hard to read. Two others are on 49th Street at Desmond and the corner of College and Hudson. I have seen Blake & Bilger marks in Berkeley with large double numerals in the center field (from 1907 and 1910), but I have yet to find a dated one in Oakland.




