Uncle John's Bathroom Reader is 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 named John Javna, who created the series along with his brother Gordon, as well as a team of assistants. The books 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. Volumes dedicated to a single topic have been released, under the title Uncle John Plunges Into..., for example: history, presidents, and the universe. There are also books on individual U.S. states, the weather, numbers, quotes, the year 2000, a special book for mothers, cat lovers, dog lovers, horse lovers, love, Uncle John's Book of the Dumb, and several Bathroom Readers for Kids Only!. Though most of the books were written by the Bathroom Readers' Institute, some of the ones that are based around a specific subject are written by a lone author, who is not in the Institute. Additionally, the Institute will often publish articles and other contributions sent in from readers. Recurring articles such as "Flubbed Headlines", "Oops", and "Classifieds" often depend on these contributions. Currently, the institute publishes three books a year; a "classic" reader, and two "plunges into" editions, one for a location such as a U.S. state, and another of a specific topic. Their volumes contain information on subjects such as quotes, dumb criminals, palindromes, anagrams, urban legends and hoaxes, failed inventions, the history of everyday things, and accidental discoveries, as well as articles on pop culture and 'celebrities' such as Emperor Norton (see Features). Throughout the books, there are what the BRI calls "running feet"—short fun facts on the bottom of each page. A typical example is "An object on Jupiter would weigh 144,000 times more than it would on Pluto." Uncle John's also publishes Page-a-Day calendars with Workman Publishing Company. The series has sold 15 million copies.