Where can I get history of '36 Phaeton #1425?

I am in the process of rebuilding my dad's '36 Phaeton. This car was converted to rear wheel drive but the original front frame was left mostly intact (it was cut off just aft of the drive axle and boxed over) which left the frame number (#1425). The car was originally a light green with dark green leather interior. Dad bought it in Southern California around the late '50s or early'60s. It has been sitting in storage (in primer) for about 30 years. I'd appreciate any info anyone has on the car.

Added 1 June: I just received my copy of Mr. Malks' book and noted that neither 810-2425 nor 812-1425 are listed but both fall in the Convertable Phaeton group. Any ideas? As an aside, the front suspension appears to be partly original, transverse spring and bracing.