Found on the Poets & Writers website, “this database of venues that host readings and author events includes bookstores, bars, cafes, libraries, literary arts centers, and more. Here you'll find information about how to schedule your own reading, admission fees, audience size, parking and transit information, and more. Save your selections to My P&W and populate a personal Google Map that you use to plan your own reading tour or simply keep track of your favorite reading venues.”
Very useful.