Does anyone know of any tabulation of key market indicators just before all major stock market crashes? (US focused for the time being)

I'm thinking it could be interesting to compare differences of the indicators between market events and support it with some commentary around social/political/global situations.

I realise there are many indicators, but of course there are key ones that are regularly discussed.

 I'm going to work through doing it myself, but thought I may not have to reinvent the wheel :)