I'm going to try and post various random spooky themed things I like and happen to feel like posting.
J C Leyendecker is one of my favourite illustrators from the golden age of american illustration. An amazing draughtsman and
profilic worker I've seen a bunch of his original canvases and sketch canvases and I'm always blown away by them. A huge infuluence on Norman Rockwell, Rockwell payed him a nice tribute when he stopped short of doing more Saturday Evening Post covers and beating JC's record out of respect. Not known for spooky covers I've always loved this witch Post cover I got many years ago.
Lynd Ward is arguably the father of the graphic novel. His picture novel in wood cuts, "Gods Man" came out in 1929 and is a haunting faustinan tale of starving artist. Its been reprinted in editions that I don't think do it justice and I've never seen it look as awesome as in the orignal 20's edition.
He also illustrated books like Frankenstein and Faust and a large Haunted Omnibus in 1937 from which the second picture is taken.