Hi Everyone,

In researching the 3D prints of these cars, one of the locations for information I was able to find freely is the June 1922 Railway Review on Google Books, that has an article on these very cars when "new".  I'll see if I can link it here:

https://www.google.com/books/edition/The_Railway_Review/DCY-AQAAMAAJ?hl=en&gbpv=1&dq=railway%20review%20june%201922&pg=PA841&printsec=frontcover

Scroll to pages 841 - 844

Or if this works:  https://books.google.com/books/content?id=DCY-AQAAMAAJ&pg=PA841&img=1&zoom=3&hl=en&bul=1&sig=ACfU3U3havnuR6b67YZYnijcOgYQ8HYnQQ&ci=17%2C894%2C951%2C409&edge=0

Hope you find that interesting!

Corey Bonsall