The centerfire bolt rifles Marlin sold in the 50's were stocked in Bishop stocks. Stockes were supplied finished to Marlin and only any slight final inletting was done at the factory.
Sako and Mauser actions, Marlin Models 322,422 and 455(?) IIRC.
Barrels were Marlin and Wilson products.

Some of the other mfg'rs that offered up Mauser, Sako, etc rifles with their own name on them in the 50s, & 60's probably used Bishops stocks as well.