I am Familair with them.
I have collected each month from Sept.1965-January 1973.
These films came with the Communication Kits and were sent out each month to the dealership by the Zone office.I think they started producing these in the 1940's up to the Dec.1972,then they went to a movie diskete.
It was a 16" X 11" X 2" slide box filled with pamphlets,brochures,etc. & 35mm filmstrips.They informed the Salesmen about everything from what was New & upcoming,customer satisfaction,How to sell & listen,promotions,model line development,etc.
All are very interesting to be sure.
Jam Handy was the Company that produced these for Chevrolet,& others.
You need a 35mm Filmstrip projector to show those films,& look for one with a turntable on the back of it,or use a distant turntable.There is no sound on the filmstrips,but there was a 33&1/3 or 45 record that accompanied each film.When the record narrator,(Hardsil Wilson),finishes,you advance the frame after the BEEP.
There was also a Viewer Box they made to watch these on in the dealership,but I have one & it is really not as good as the trustworthy Projector & screen setup.