look on ebay for some OLD azo, it comes in weird sizes and probably is still good, it lasts forever.
get some cloth gloves and a bright light bulb and make azo contact prints. if you have ansco 130 azo prints
well in that, also amidol ( not the chinese amidol it will turn your developer pink ) ...
safety film had been around for a bunch of years by the time your film was made, so it won't be flammable
great project, have fun !