Back Under the Stairs by John G. Stockmyer is free today from the Amazon Kindle store, and you can pick up your free copy by clicking here or typing in http://amzn.to/pR4Yh9 into your computer’s web browser.
Here is the book’s description from the Amazon website:
Recently purchasing what was said to be a “haunted house,” John Lyon, young Kansas City historian, stumbled into an alternate reality accessed from the storage space under his stairs. He was able to make it home from the first trip to Bandworld unscathed.
His 20th Century knowledge now buttressed by the magic he’d learned to use in the alternate world … what could be wrong with taking another trip to enchantment-land? Nothing. . . if you don’t count John’s encounter with the Lxlop, being caged by Pfnaravin, and a deadly battle with the Azare Mage-King Auro!