Here's my email. I'm pretty sure I have additional photos of your Plymouth I took that day. George Klass geoklass@yahoo.com
1927 Fageol. Among the features are a low frame chassis, an open cab, and a wooden dump body. Fageol was a company in Oakland, California, known for designing buses and various trucks.
An L.A RTD bus part of the Southern California Rapid Transit District. We used to call the RTD buses, the Road To Death because of all the accidents they were having.