Ed - try Olsen's
http://pictures.olsenstoy.com//default.htm
They do not show the part directly, but they appear to have the roof. Sometimes they have parts not listed on the website or they may be able to direct you to a source.
http://pictures.olsenstoy.com//search_lionel.htm
313 Parts list
http://pictures.olsenstoy.com/searchcd31.htm?itm=282
Regards, Roy
Bob Nelson
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