I can't seem to find information about economists, or others, warning about the overheated stock market of the 1920s in the US that would culminate in the stock market crashing on Black Thursday, October 24th, 1929, and Black Tuesday, October 29th, 1929. I keep seeing general statements that "prudent experts" warned about the overheated stock market, but that is it.
If you could provide paper names, or books, published prior to those dates that would be great. If it has to be a post-event book, or paper, it needs to be one that provides the names who warned against the possibility of a crash.