1948 13th Avenue
This is interesting. The very same mark appears in 1947 as “Avena and Son” rather than “S. Avena and Sons.” Between these two years, Mr. Avena chiseled off the first and last letters.

1345 E. 34th Street
I already have a 1928 Hennig mark, but this one is better and configured differently.

1377 E. 32nd Street
After all the W. O. Nelsons and F. E. Nelsons, this is the third Nelson on an Oakland sidewalk.

2200 13th Avenue
This is right across the street from the address on the stamp. The building there is a nondescript home of that vintage.

2585 13th Avenue

Stuart Street at E. 32nd Street
M. Goncalves is a new maker for me, and only my second with an “East Oakland” address (the other is C. F. Lund).

1350 E. 33rd Street
This hand-drawn mark establishes Sandin & Swanson a year earlier than their attractive oval stamps record.