Here's a collection of Christmas Themed Horror Book Covers from over the years, if I missed any please let me know in the comments cause I'd be interested in checking them out!
First up is R.L. Stine's "Silent Night" Trilogy, I have all 3 books so I scanned the front and back covers! One thing I always liked about the "Fear Street" books was how much they looked just like an 80's Slasher Film you'd beg you parents to rent for you at the video store!
The next to books I found online so I don't have much info on them, gotta say the covers are tremendous though!
Here's another one from Mr. Stine and a recent one at that!
It makes me happy to know that R.L. is still pumping out books to this day!
The following all come from the now sadly defunct page "If It Were Stine", a page that would take really horror movies and give them mock "Goosebumps" Covers and Names!
https://www.facebook.com/ShitMovieFest (SMF on Facebook)
https://twitter.com/ShitMovieFest (SMF on Twitter)
http://instagram.com/shit_movie_fest (SMF on Instagram)
http://shitmoviefest.tumblr.com/ (SMF on Tumblr; Page ran by Chris Gormley)