Question: Are James Kerwin and Mel Stuart both producers?

Context articles: Mel Stewart
Patrick Kerwin (politician)
Yesterday Was a Lie
Mel Stuart
The Triangle Factory Fire Scandal
Fairest of Them All
Running on the Sun: The Badwater 135
Wattstax
One Is a Lonely Number
James Kerwin

Milton "Mel" Stewart (September 19, 1929 – February 24, 2002) was an American character actor, television director, and musician who appeared in numerous films and television shows from the 1960s to the 1990s.
 He is best known for playing Henry Jefferson on the popular television series "All in the Family" and for playing section chief Billy Melrose on the television series "Scarecrow and Mrs. King".
 Stewart is sometimes credited as Melvin Stewart or Mel Stuart.
Patrick James Kerwin (26 July 1873 – 2 September 1950) was a member of the Queensland Legislative Assembly.
Yesterday Was a Lie is a 2008 neo-noir film written and directed by James Kerwin and starring Kipleigh Brown, Chase Masterson, John Newton, and Mik Scriba.
 In publicity materials, the film has been described as a combination of science fantasy and film noir.
Mel Stuart (born Stuart Solomon; September 2, 1928 – August 9, 2012) was an American film director and producer, who often worked with producer David L. Wolper, whose production firm he worked for 17 years, before going freelance.
The Triangle Factory Fire Scandal is a 1979 American made-for-television drama film starring David Dukes, Tovah Feldshuh, Lauren Frost, Stacey Nelkin and Ted Wass.
 It was directed by Mel Stuart and premiered on NBC on January 30, 1979.
"Fairest of Them All" is a fan-produced "Star Trek" episode released in 2014, the third in the web series "Star Trek Continues", which aims to continue the episodes of "" replicating their visual and storytelling style.
 It was written by James Kerwin and Vic Mignogna from a story by Vic Mignogna and directed by James Kerwin.
 "Fairest of Them All" is a direct continuation of the original "Star Trek" episode "".
 In 2014, "Fairest of Them All" won the Burbank International Film Festival award for Best New Media in Drama.
Running on the Sun: The Badwater 135 is a 2000 documentary film directed by Mel Stuart.
 The film follows athletes as they run 135 miles in the 1999 Badwater Ultramarathon, starting in California's Death Valley and ending at Whitney Portal, the trailhead to Mount Whitney.
Wattstax was a benefit concert organized by Stax Records to commemorate the seventh anniversary of the 1965 riots in the African-American community of Watts, Los Angeles.
 The concert took place at the Los Angeles Memorial Coliseum on August 20, 1972.
 The concert's performers included all of Stax's prominent artists at the time.
 The genres of the songs performed included soul, gospel, R&B, blues, funk, and jazz.
 Months after the festival, Stax released a double LP of the concert's highlights titled "Wattstax: The Living Word".
 The concert was filmed by David L. Wolper's film crew and was made into the 1973 film titled, "Wattstax".
 The film was directed by Mel Stuart and nominated for a Golden Globe award for Best Documentary Film in 1974.
One Is a Lonely Number (also known as Two Is a Happy Number) is a 1972 American drama film directed by Mel Stuart and starring Trish Van Devere, Janet Leigh and Melvyn Douglas.
 The screenplay, based upon the short story "The Good Humor Man" by Rebecca Morris, was written by David Seltzer.
James Kerwin (born October 13, 1973 in St. Louis, Missouri) is an American film and theatre director.