I would start my search at Numrich gun parts corp.They may be found on the web.
The Sears Model 42DL .22 caliber rifle was manufactured by Marlin Firearms, their Model 80. Check with Marlin for parts availability.
Numrich gun parts, look under Marlin/Glenfield parts list
Parets for the OTASCO 6085 are identical as those used in a model 60 Marlin from 1985. They can be purchased from Marlin, Brownells, or Gun Parts Corp.
The Model 336 was not manufactured by Winchester... instead, it is a Marlin made lever-action. Contact Marlin through their website for parts & service. Bert H.
I believe it was a Marlin model 49. I had one of these myself in the 60's. If you are trying to find replacement parts, then you can use the Marlin parts as is. That is what I did, parts for Marlin are easier to find and sometimes cheaper.
I would first look at numrich gun parts.
According to C.O.: "103 13 was made by marlin for Sears it is a marlin 81 parts are readily available from Numich gun parts West Hurley NY."
I found an ad for this gun parts service using Google. They list this rifle as one they can supply parts for. They list a phone number to call too. Good luck. http://www.jackfirstgun.com/catalog.html
Basically a Marlin Model 100. I have parts. firstname.lastname@example.org
j c Higgins model 41 was made by marlin try looking for parts for a Marlin 80 it is the same gun
it might also be a marlin, but try any local gun show
The Wards Westernfield Model 62 .22 single shot rifle is a Stevens Model 83. Parts can be located @ Numrich Arms Corp. (egunparts.com)