John Irwin Friedman, a listed artist who was also a close friend of Charles Manson -- long before as well as after the gruesome Tate-LaBianca murders catapulted all Manson family members and associates into notoriety, whether they were involved in the tragedy or not. Among these was Friedman, whose son John Jr. (aged about 10 at the time) was at the Spahn Ranch (Manson's commune) when the bust came down, apparently with babysitters. Friedman changed his name to Partee some time thereafter and created a variety of imagery throughout his career, up until his death in 2008.
 
Manson family vintage handwritten letter to Charles Manson from the early 1970s. The letter was written by John Irwin Friedman aka Partee. Includes hand drawn stationary artwork b y Partee on the side with the handwritten leter.

This was among letters in the personal collection of Michael Feeney who was friends with Manson early in his incarceration.

The letter reads "Hi how's things going with you?  You should come out and see us sometime, it's really neat.  The house we live in is really nice and it's all fixed up nice.  We have painting on the walls and a sun a moon a star and they have there kind of light.  Hope your having a good time.  See ya, The Desert Elfs"