IIRC, Atlas was the house brand for Chevron/Standard/Esso stations. I just saved a big box of old Atlas ignition pars which was being tossed. There are dozens of points, condensors, distributor caps, radiator caps and other service parts. If I can identify them, I'll pay it forward here just for the cost of packing and postage. jack vines
I also have an early 70's Atlas Parts book , my family had an EXXON Station and I have a large selection of Ignition parts and Fan Belts etc. but I need to keep the book, hopefully "OILGUY" can answer most of your questions , I might be able to identify the ones he can't.
Crayons: I have my Impala in for winter storage along with my OT Malibu and OT Chevy 2 2door sedan project. Plus my OT Silverado. Thanks for the positive reinforcement. I deleted my post. I get irritated when someone asks for help and you offer it then two days later no response from them. Got tired of checking this thread three times a day and withdrew my offer to help.