I was talking to Bob Hitchcock, owner of http://www.OldColemanparts.com, and he has put his parts diagrams on his website.
If you click on "lanterns", you will see a list of almost every lantern Coleman made. Click on a specific model and a parts diagram will appear. Click on the diagram and it will enlarge.
I encourage everyone to buy parts from Frank of the Old Town Coleman Center first. If Frank doesn't have the part you need, then contact Bob.
Frank does have a link to Bob's website, by the way.
Murff
EDIT: As you can tell, this post has a few days on it since neither Frank Bebb nor Bob Hitchcock sell parts anymore. The link still works and this Forum encourages parts still be bought from Oldcolemanparts.com, Mike Merz, proprieter!