(Note: not sure the self-stick part of the velcro fasteners will still work after 46 years, but the rest of the kit should be fine!)
Info. from package:
Makit
& Bakit
"stained glass" kit
with FREE self-sticking velcro fasteners
make your own "stained glass" design
with Makit & Bakit plastic cooking crystals
another fine sun catcher produce by
Quincrafts Corporation, Hingham, MA 02043...1978"