Below is a scan of the hand-colored original art for Secrets of Haunted House #16, September, 1979. Below that is the cover of the published comic book.
Here is a wonderfully creepy story drawn by Basil Wolverton. The story is called "They Crawl by Night" and was originally published in Journey Into Unknown Worlds #15 (February 1953). These scans are from a reprint comic Basil Wolverton's Gateway to Horror #1 (June 1988).
The ACBA (Academy of Comic Book Artists) is a professional organization founded in 1970. The ACBA functioned as an honorary society, presenting Shazam awards for outstanding comic book work from 1970-1975. The Academy has also worked for increased rights for comic book creators, particularly around the return of original art to the artist. The ACBA published several sketchbooks as fundraising tools. Below are some what I feel are some of the better pieces from the 1975 sketchbook. Read a review of the 1973 edition at Ink Destroyed My Brush.