In looking analogies previous crashes or "panics" as they used to be called, you might want to consider what factors were involved in the 2008 crisis. Conventional wisdom - which it is important to remember is useful as a guide but should always be subject to questioning as you research - seems to be that it was a combination of a real estate price "bubble," which became coupled with complex financial investment structures (derivatives) that encouraged, demanded even, more and more mortgages to be issued. A "vicious cycle" was created as credit was extended recklessly. Other factors include centralization, leading to problems not unlike monopolies and cartels, increased integration of global markets due in part to technology, and the rollback of regulatory structures in the USA. There's a lot going on there, which I would suggest you need to get some handle on in order to figure out which historical analogies are apt.

If you are outside of a library, Google is a useful research tool. One trick you may find handy is using a source limiter. To get only information from academic sources, you can add [] to your search (not using the brackets). I tried [real estate speculation financial crash], and looked through a few pages of results. You can vary your search terms as you continue to shape your research, and try limiters such as [] for government documents, or [] for organizations. You will notice that the latter gives you sources ranging from Wikipedia to the World Bank.

A New York Times article from 2008 drew comparisons to the Panic of 1873. 1873 is an interesting case, since that era can be seen as the first panic of the modern industrial age, and may be a starting point in the story of regulation that came into play at the turn of the last century, peaked midcentury, and was gradually reduced over the past 30 years. Again, this is something of a "conventional wisdom" view that can help guide research but shouldn't be taken without question.

Related Question