143 Waldo Way, Piedmont
This straight mark was used by Ed Doty even after he adopted the “Master Concrete” stamp in 1937. With this example, I’ve documented each year from then up to 1944. If I find a 1945 example, that will complete the set.
143 Waldo Way, Piedmont
This straight mark was used by Ed Doty even after he adopted the “Master Concrete” stamp in 1937. With this example, I’ve documented each year from then up to 1944. If I find a 1945 example, that will complete the set.

6 Wildwood Avenue, Piedmont
There aren’t a lot of Larry Frye marks out there, so I was happy to find a new date for him.
24 Blair Avenue, Piedmont
After all these years I’m still finding new names underfoot. Adolph Dinelli lived in Berkeley, and three men with his surname, Charles (cement finisher), Frank (laborer), and Tony, were listed in the 1941 directory.
Dinelli was born in Italy in the early 1870s, emigrated to America in 1894 and died in February 1947, so this mark was made after his death. Oddly, a son named Charles died in 1923 at the age of 17. Perhaps the Charles listed in the 1941 directory was a nephew.