That saw is probly 50 or 60 years old. I doubt you wound find parts for it and if you did find parts a get it running all you would have is an old worn out saw that costed you lots or time and money. It would be a lot smarter to just get a new saw that comes with a warrenty and has redily avaliable parts. Just my opinion.
I plan on restoring my 7-29 for my collection, about the only cutting it would be used for would be at shows. I have a modern Stihl (090) that I use for any jobs that need done
David...from time to time you can find these saws on ebay or other auction sites. Many times the seller is just selling for parts (the saw doesnt run, parts missing, etc.)...good luck and let us know how you make out...