"Uncle John's Bathroom Readers" are a series of books containing trivia and short essays on miscellaneous topics, ostensibly for reading in the bathroom. The books are credited to the Bathroom Readers' Institute, though Uncle John is a real person, and are published by Portable Press, an imprint of Printer's Row Publishing Group. The introductions in the books, as well as brief notes in some articles, provide small pieces of information about Uncle John. The first book was published in 1988, and in 2012, the series reached its 25th release, The "Fully Loaded 25th Anniversary Bathroom Reader".