Van Eaton Galleries right now. The two above are by Mel Shaw for The Great Mouse Detective. They will not be included in They Drew As They Pleased - Volume 5, sadly, as they feature smoking and drinking.
The one below is a very early concept for Winnie the Pooh by Mary Blair from the late '30s or early '40s. It is too late to include it in They Drew As They Pleased - Volume 4 (I am reviewing the galleys at the moment), but you will be glad to know that another piece by Blair from Winnie the Pooh will make it into the book.