One of humanistic psychology's early sources was the work of Carl Rogers, who was strongly influenced by Otto Rank, who broke with Freud in the mid-1920s.
Sandy Denny died of a cerebral haemorrhage on 21 April 1978 at the Atkinson Morley Hospital, after falling down a flight of stairs.
Reginald Denny died on 16 June 1967 at the age of 75, after suffering a stroke whilst visiting his home town of Richmond in England. He was buried at Forest Lawn-Hollywood Hills Cemetery in Los Angeles, California.