Leisure/Dorchester published my first four horror novels (COVENANT, SACRIFICE, THE 13TH and SIREN) and they're all available through B&N for the Nook (as are a couple of my small press titles, as you noted). Just do a search for John Everson.
My fifth novel, THE PUMPKIN MAN, is currently slated for ebook and trade paperback release through Leisure next fall, just in time for Halloween. In the meantime, I'm hoping folks will check out my other books, including SIREN, which just came out a couple months ago. And do let me know what you think if you read them!