In the May/June 2022 NGSLG, I saw a plan for a Russel Wheel and Foundry Logging Car, and went searching for more photos of the car, either models or prototype.
While down that particular WorldWideWabbit hole, I ran across a nice collection of "Builders of Wooden Railway Cars"
This is really more of a history site, but it does have photos for many of the builders entries.
https://www.midcontinent.org/rollingstock/builders/index.htm
The amount of information at each builders entry varies, but there are some photos and often more links within the separate pages for each builder. Unfortunately the photos are not very sharp.
The collection is offered by the Mid-Continent Railway Museum in Wisconsin:
https://www.midcontinent.org/
A different page that I found particularly interesting is this one in their dictionary section that details passenger car clerestory framing:
https://www.midcontinent.org/rollingstock/dictionary/dictionary1.htm#Duckbill%20roof
Great reference material, thanks for posting Mark..... 8)
Terrific resource, Mark.