Robert D. Webb
Robert D. Webb( January 8, 1903 – April 18, 1990) was an Academy Award – winning film director.
He directed 16 films between 1945 and 1968.
He won the Academy Award for Best Assistant Director for" In Old Chicago", the last time that category was offered.
Scotty Fox
Scott Fox is a pornographic film director who is a member of the AVN Hall of Fame.
Gregory Dark
Gregory Dark( born Gregory Hippolyte Brown on July 12, 1957 in Los Angeles) is an American film director, film producer, music video director, and screenwriter.
Dark is one of the few adult filmmakers to successfully transition into mainstream Hollywood film- making.
He has also been credited as Alexander Hippolyte, Gregory Hippolyte, Gregory Brown, and as The Dark Brothers.
Rufus Norris
Rufus Norris( born 16 January 1965) is a British theatre and film director, who is currently the Artistic Director of the National Theatre.
Dan Milne
Dan Milne is a British actor/ director who is possibly best known for his role in" EastEnders".
Logan Sandler
Logan Sandler is an American writer and director who is best known for his first feature film" Live Cargo".
On the Threshold of Space
On the Threshold of Space( aka Threshold of Space) is a 1956 drama directed by Robert D. Webb, starring Guy Madison, Virginia Leith and John Hodiak.
It was Hodiak's final film; he died six months before it was released.
" On the Threshold of Space" provides a historical depiction of air force tests made in the United States for the imminent space race.
Ben Palmer
Ben Palmer is a British film and television director who is known for being the director of" Bo' Selecta" and" The Inbetweeners".
Elliot Silverstein
Elliot Silverstein( born August 3, 1927, in Boston, Massachusetts) is an American director, who is best known for being the director of the movie" Cat Ballou"( 1965).
New Wave Hookers
New Wave Hookers is a 1985 pornographic film that established the Alt porn genre.
It featured a cast of established performers from the era and was followed by a number of sequels and a remake.
The movie starred Ginger Lynn, Desiree Lane, Kristara Barrington, Kimberly Carson, Brooke Fields, Gina Carrera, Jamie Gillis, Jack Baker, Tom Byron, Steve Powers, Peter North, Rick Cassidy, Greg Rome, and Steve Drake.
Traci Lords appeared in the original version dressed in all- red lingerie and portrayed" the Devil."
The film was produced by the Dark Brothers, who featured the slogan" Purveyors of Fine Filth."
Walter Dark was the executive producer, and Gregory Dark produced, directed, and co-wrote with Platinum Fire.

Question: Which film has the director who is older than the other, On The Threshold Of Space or New Wave Hookers? 
Answer: On The Threshold Of Space