Nina Hartley's Guide To Anal Sex 1995 | Adam & Eve | Runtime: 1h 17min | Series: Nina Hartley's Guide
Nina Hartley's Advanced Guide To Oral Sex 1998 | Adam & Eve | Runtime: 1h 28min | Series: Nina Hartley Guides
Tristan Taormino's Guide To Bondage For Couples 2012 | Adam & Eve | Runtime: 3h 1min | Series: Tristan Taormino