PROJECT NERVA: NUCLEAR PROPULSION IN SPACE 1968

I found this interesting short film on the Tube concerning NASA's co-studies of nuclear space propulsion with the Atomic Energy Commission.

A year after the release of the Project SWORD toy range and the Nuclear Ferry and a year before the Moon landing.

There are also loads of atomic rocket designs on the Atomic Rockets site http://talknicer.com/icryo/docs/rocket3ap.html