Lynette Alice "Squeaky" Fromme aka Red and lifetime friend of Charlie. 
 
Handwritten letter on a card which Fromme made while in federal prison. The front of the card is stamped at the top, "Manson Family Original," and at the bottom, "L. Fromme.
Squeaky has affixed a Red Cloud ad on the front and written on two separate folded sheets of paper. 
Hand signed, Lynette.