These two sites must be shared.
Antique Telephone Repair Help Page Tons of info for the do-it-yourselfer. These guides helped me troubleshoot the hookup for my Automatic Electric to a modern outlet (specifically the ringer) so that my new/old phone was a happy phone - Proper Hookup of Ringers. If your trouble goes deeper, the author can also repair/restore your phone - Rotary Dial Telephone Repairs.
Vintage Rotary Phones A true fan site with discussion, sales and lots of photos.
There's plenty more to Google out there, but you'll have to excuse me... the phone is ringing.