"I found you concrete stamp collection fascinating. My son’s maternal grandfather was LJ Lorenzetti for whom I worked when I got out of service in 1970. My father-in-law learned his trade from Nat Lena who was his mother’s cousin. Nat Lena came to this country from Italy in the early 1900s. He started in the concrete business eventually becoming a general contractor. one of his buildings is Corpus Christi Catholic Church on Park Blvd in Oakland. Lino J Lorenzetti left Nat Lena’s employ in the early 1950s and worked out of Alameda. Lino was also born in Italy but came to the US with his parents when he was an infant. His father Giorgio worked for Nat until Lino became a contractor at which time he went to work for his son Lino. I believe that Angelo Sposetto also worked for Nat Lena at one time. another name that you will see in Oakland and in the East Bay is Jardine. George Jardine also learned his trade while working for Nat Lena. He too later became a concrete contractor and had his business in Alameda. Another Alameda contractor was Aldo (AJ) Ferraro. His real love was making cement sculptures. All these men knew each other, were good friends, and when needed would help each other with jobs. My father-in-law Lino called them “his friendly competitors.” i would be remiss if I did not mention the Apodaca Brothers who were also from Alameda. The one brother who had his contractors license had worked for the City of Alameda, and I believe that is where he learned the trade. Just one final thought – all sidewalks and flat concrete work on public property had to be stamped with the contractor’s name and the date the concrete was laid. That was generally the very last thing that was done. I worked with all the above individuals except the Apodaca brothers. I worked full-time with my father-in-law LJ Lorenzetti from 1970 – 1971. In 1971 I went to work for the Alameda Police Dept and became self-employed but still worked in the concrete business when I had the chance."
Take a look at the work of the contractors mentioned here by clicking on the links below!