Some of Ricky Jay's collection just went up for auction; PBS has a conversation between Ricky Jay and Art Spiegelman about Jay's collection from 2015

The conversation is here. Spiegelman tells a funny, self-denigrating story at the end about when he first started showing pages of Maus. The auction is here, including a downloadable pdf of the guide. And here's a thread by his former assistant, highlighting some items.

And since I wanted a big jpeg for myself: