

Maybe you already know what you need and none of this is needed - hope so - as I have searched for cams before and they are very difficult to match to one model machine (Singer may be the exception).It also publishes research findings, auction results, and information on restoring vintage machines for an international membership of sewing machine collectors.

Hopefully this person will respond as he has a lot of sewing machine knowledge. The society archives sewing machine manuals, advertisements, and other information and offers many downloadable materials on its website.
FRANKLIN SEWING MACHINE MANUAL FREE
Most sites will require that you become a member but that is usually free and only requires n email address.
FRANKLIN SEWING MACHINE MANUAL MANUAL
Do you have a manual? I have not seen the contents of an older manual for a machine that uses cams so not sure if that would be of any help.Not sure how you can compare if you do not have any cams for your machines.There is very little information on the boxes that hold the cams so you may have to go by looking closely at the cams and comparing them with any you may have.In searches on eBay and Etna and even Google you will find quite a few vintage Montgomery Ward cams but very few of the sellers will know what model machines their cams will fit.I believe you may need the actual model number to be able to locate cams that will fit your machine.
