The company indicated that plans for a history channel were in the works in 1993; it purchased the Lou Reda Productions documentary library and long-term rights for the Hearst Entertainment documentaries archive. In June 1993, the Rockefeller Group's Radio City Music Hall sold its 12.5% stake in A&E to the other three partners (now including NBC in place of RCA after GE's purchase of the latter in 1986) with NBC owning 25% and the other two 37.5% each. Also that month, a new production unit was set up.