Nasco is a professional lab supply company. To get their extensive
catalog of science teaching aids, you may need to use a school letterhead. (As with many professional supply houses, Nasco will do business with individuals, but only serious ones). That’s easily arranged, and well worth the trouble. They stock everything from pig embryos to solar energy experiments, and the books and charts to go with it all. Nasco is probably where your school got their science stuff.