Jerzy Kosinksy: Steps

Publisher: Bantam (1969)

Allen Edwardes: The Jewel in the Lotus

Publisher: Bantam (1976)

Julie Cummins: Wings of an Artist

 A collection of children's book illustrators, featuring the Dillon's work:

Publisher: Harry N. Abrams (1999)

Mildred Pitts Walter: Brother to the Wind

Publisher: Lothrop, Lee & Shepard Books

Thanks for the amazing images, Leslie!

Harlan Ellison: How Intersting, a Tiny Man

Publisher: Realms of Fantasy Magazine (February, 2010)

Harlan Ellison: Strange Wine

Publisher: Harper & Row (1976)

Harlan Ellison: From the Land of Fear

Publisher: Belmont (1967)

Harlan Ellison: The Glass Teat

Publisher: Ace Books (1970)

See also:
http://leo-and-diane-dillon.blogspot.com/2011/09/harlan-ellison-glass-teat.html

Harlan Ellison: Love Ain't Nothing but Sex Misspelled

Publisher: Trident Press (1968)

Harlan Ellison: Gentleman Junkie

Publisher: Regency (1961)

Harlan Ellison: Shatterday

Publisher: Houghton Mifflin (1980)

Harlan Ellison: The Beast that Shouted Love at the Heart of the World

Publisher: Avon (1969)

Harlan Ellison: Dream Corridor

Publisher: Dark Horse Comics (Issue 2 April 1, 1995)

"Harlan Ellison's Dream Corridor" is a Comic Book Volume published by Dark Horse Comics. It's an anthology series with stories adapted from the written works of speculative fiction and comic book writer Harlan Ellison  

http://www.comicvine.com/harlan-ellisons-dream-corridor/49-37552/

Harlan Ellison: Dangerous Visions

 Publisher: Doubleday (1967)

Publisher: Signet (1975)

Harlan Ellison: Approaching Oblivion

Publisher: Walker & Company (1974)

 Publisher: Signet (1976)