Rocketdyne nuclear-electric spacecraft art

A piece of 1960’s (published in a book in 1967, but it looks older than that) artwork depicting a five-man nuclear-electric spacecraft. heading to Mars. The spacecraft is long for radiation shielding purposes; at the far distant forward end is the reactor, with the crew and ion engines in the conical section in the tail. Between the ends is a long boom attached to which are the propellant tanks and two large radiators. This is more or less the propulsion system and layout originally planned for the spaceship “Discovery” from the movie “2001: A Space Odyssey,” with the difference that the ion engines were on the other side of the crew module, and the spacecraft “towed” the reactor and radiators, rather than pushing them.