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Botany educational charts, printable;1894. Avocado and Iris.
Some cosmetic chemistry, free! (No warranties of any kind, we are doing this from memory):
Avocado explaining Myristaceae and oil producing parts – interesting because cosmetic chemists know that myristic acid derivatives covalently linked to anything else increases penetration through the skin. So avocado oils really do penetrate the skin for topical ointments.
Olive oils are good for your circulation because of their level of saturation. And, coconut oils have a particular fatty acid structure (branched?) that make it particularly suited for smoothing the keratin in hair.
Also, iris educational chart explaining plant anatomy aspects of petal cells and vascular tissues.