Looking for Mail Truck History

[34Pietenpol]

I have a replica 1931 Mail Truck built by Walt Pazda in Silver Creek, NY. He evidently had a business or large hobby building Model Ts and As. When he passed there was a huge estate auction with 20+ cars and hundreds of box lots of parts. The auction was in 2016 I believe, maybe 2014. Now that I own one on Walt’s builds, I am interested in learning some background about my Mail Truck and its builder. Anyone out there with history to share? Probably a long shot. Thanks.