Hendrickson's only recorded credit is as co-director and co-producer (with Laurence Merrick) of MANSON (released in January, 1973), a documentary on Charles Manson and his "family". It was reissued as MANSON AND SQUEAKY FROMME.  Nominated for Documentary (Features) 1972: MANSON - Producer (w. Laurence Merrick) 1 nomination