5800 Colby Street
1929 – Riechel & Bredhoff
10 June 20091928 – Schnoor Bros.
9 June 2009
5807 Colby Street
1927 – J. Devoto
8 June 2009
6412 Colby Street
My theory of Initial Robust Marks continues to be borne out with this J. Devoto mark, again the earliest I’ve found.
1927 – Cotterill
7 June 2009
6650 Dana Street
Cotterill marks also seem to get lighter in later years.
1924 – Schnoor Bros.
6 June 2009
6442 Colby Street
This is the earliest Schnoor Bros mark I’ve found. There seems to be a pattern with early dates: the marks are robust, as if the makers want to really impress people. Shortly afterward the marks get lighter.
1918 – Sandin & Swanson
5 June 2009
6584 Chabot Road
I surveyed this street once before, but missed this mark. Now I have to re-walk all of north Oakland.
1916 – Oak. Concrete T&M Co.
4 June 2009
6635 Dana Street
