Favourite resources

http://www.ply33.com

"Plymouth: The First Decade" Plymouth 1928 to 1948 parts cross-referencing and great history .

http://www.allpar.com/history/plymouth/1940.html

"Allpar" Nice history section.  The ads make the website look trashy but the articles almost make it worth it.

 http://www.plymouthbulletin.com/rearbrakes.htm 

"Plymouth Bulletin" Practical articles and mopar history.

 http://www.plymouthbulletin.com/adventure01.htm 

"Plymouth Bulletin" Adventure travel.

http://www.secondchancegarage.com/public/432.cfm 

Engine specification for the 217 engine (from 1952 Plymouth Concord).