Thread:Azathoth the Abyssal Idiot/@comment-25295648-20190803010729

I am going to do stuff on the great old ones for my lovecraft analysis. In order, what are the most important books dealing with the Great Old Ones and their lore, status, and power? What expanded mythos stories may I need to take a look at too?

Also, is the King in Yellow canon or needed to add on my research? 