Over the last month or so I’ve run across a few marks I missed or dismissed during the big survey.
1920 – F & R Farrer

3070 Champion Street
The date is barely a whisper; at least it’s some time in the 1920s. The 1922 directory lists three Farrers — Robert, Fred and Arthur — as concrete workers, all at 7305 E. 14th Street, so this must be Fred and Robert’s outfit. They’re clearly related in some fashion to Farrer & Sons, attested with a mark from 1926. The evidence is scant.
1935 – M. Bua

4051 Suter Street
Again, the date may be a hallucination, but that’s what I decided when looking at in person. I wouldn’t bother with such a poor mark except that it’s only the second example by Michael Bua, who’s listed in the 1930 directory as a general contractor at 237 Bacon Building.
1939 – W. M. Sharp

1452 Lakeshore Avenue
This is a clearer example of the year than the one I had before, which I decided was really from 1938.