The Energon Pub

Hi there everyone, I'm currently taking a public speaking class in college and have been assigned to give an informative speech. The obvious choice for me was to do it on the history of collecting, with a heavy emphasis on toys of course. With that said, does anyone know a reliable source that covers the history of collecting transformers? I already know about the history of the toys themselves but I was hoping someone might know something about the origin of the hobby and reasons that people do it.

Sorry about that wall of text; anyway any help would be greatly appreciated so thanks for reading.