Of course, the physical copies of the manual are few and far between—the discovery of an original copy, last year, spawned a website, a Twitter account, and massive amounts of public interest. And so, this August, the MTA finally agreed to let the designers who rediscovered it create a Kickstarter to reprint the five-ring bible as a hardcover book.

The MTA just had one caveat.

The reprint will happen only once. And it would only last for the 30 days of the Kickstarter campaign. After this, it will never be printed again. So if you're interested in getting your hands on a $98 copy of the book that still defines how one of the largest, most complex transit systems in the world actually looks, here's your chance. [ Kickstarter]