Victor Salvo.. here are the company credits of the 1972 movie... "Last House on the Left"...

Production Companies

• Sean S. Cunningham Films (presents) (as Sean S. Cunningham Films Ltd.)
• The Night Co. (copyright holder)
• Lobster Enterprises (a film from)

Distributors

• Hallmark Releasing (1972) (USA) (theatrical)
• American International Pictures (1976) (USA) (theatrical) (reissue)
• Cinema International Canada (CIC) (1973) (Canada) (theatrical)
• Filmways Pictures (1981) (USA) (theatrical) (re-release)
• Scotia International Filmverleih (1973) (West Germany) (theatrical)
• Umbrella Entertainment (2010) (Australia) (theatrical)
• Anchor Bay Entertainment (UK) (2003) (UK) (DVD)
• Arrow Video (2018) (USA) (Blu-ray)
• Astro Distribution (1999) (Germany) (VHS)
• CIC Video (Canada) (VHS)
• Dutch FilmWorks (DFW) (2001) (Netherlands) (VHS)
• Dutch FilmWorks (DFW) (2003) (Netherlands) (DVD)
• Empire Video (Netherlands) (VHS)
• Future Film (2005) (Finland) (DVD)
• Laser Paradise (2004) (Germany) (DVD)
• MGM Home Entertainment (2002) (Canada) (DVD)
• MGM Home Entertainment (2000) (USA) (VHS)
• MGM Home Entertainment (2002) (USA) (DVD)
• Mike Hunter Video (West Germany) (VHS)
• NSM Records (2012) (Austria) (Blu-ray)
• Star Media Entertainment (2005) (Norway) (DVD)
• TV Tokyo (Japan) (TV)
• Umbrella Entertainment (2004) (Australia) (DVD)
• Umbrella Entertainment (2010) (Australia) (video) (VOD)
• Vestron Video (1985) (USA) (VHS)

Other Companies

• R.S.I. (mix)
• The Optical House (opticals & blow-up)