Want to build a Dalek? Now you can.
As I am understanding it, these were official blueprints and instructions for making a Dalek published sometime in the ’70s in the back of a Dr. Who paperback. The scanned images had been archived on a now defunct FTP but were saved by Tom Rathborne. You can find all five pages (and more) on his site here.
Very cool stuff. Thanks to Chesspieceface for the tip!