User:SOTO/Forum Archive/Help!/@comment-7657843-20170419201659/@comment-4028641-20170421170631
From Tardis Wiki, the free Doctor Who reference
Well, simply because by all accounts they could only be constructed from TARDISes. However, it does seem that the page is on the concept of a paradox machine. Thus I will instead by adding it to Category:TARDIS variants.
