Like this one by John Kemper
Here are some delightful examples:
The Golden Circus Book by Kathryn Jackson with end paper art by Alice and Martin Provensen, 2005 found here on Red Caps Cards, where you can see more examples.
Of course there are some great examples on Pinterest, here and here.
COOL ENDPAPERS ON PARADE! on Flickr.
Bob Staake The End post.
This is a beautiful example by Walter Crane, Sing a Song of Sixpence Picture Book, Endpapers, London & New York: John Lane, 1909, below.
THE END! XOXOXOX