Question: Were both Vincent Sherman and George B. Seitz film directors?

Context articles: Midnight Mystery
Vincent Sherman
George B. Seitz
Rogues and Romance
Bangladesh Film Directors Association
Pirate Gold (1920 serial)
Harriet Craig
The Romance of Elaine
The Damned Don't Cry
Major General George B. McClellan

Midnight Mystery is a 1930 American mystery film directed by George B. Seitz, from a screenplay by Beulah Marie Dix, adapted from the play, "Hawk Island", by Howard Irving Young.
 Betty Compson starred, leading an ensemble cast which included Hugh Trevor, Lowell Sherman, Rita La Roy, Ivan Lebedeff, Raymond Hatton, June Clyde and Marcelle Corday.
Vincent Sherman (July 16, 1906 – June 18, 2006) was an American director and actor who worked in Hollywood.
 His movies include "Mr. Skeffington" (1944), "Nora Prentiss" (1947), and "The Young Philadelphians" (1959).
George Brackett Seitz (January 3, 1888 – July 8, 1944) was an American playwright, screenwriter, film actor and director.
 He was known for his screenplays for action serials, including:
Rogues and Romance is a 1920 American silent drama film directed by George B. Seitz.
 The film was a feature-length version of the serial "Pirate Gold", also directed by Seitz, and was shot in Europe.
Bangladesh Film Directors Association is the pan-national trade body of film directors in Bangladesh.
 The Bangladesh Film Directors Association’s General Secretary is Badiul Alam Khokon.
 Mushfiqur Rahman Gulzar is the president of Bangladesh Film Directors Association.
Pirate Gold is a 1920 American adventure film serial directed by George B. Seitz.
 Seitz also directed a feature-length version of the serial, "Rogues and Romance", released in December 1920.
Harriet Craig is a 1950 American drama film starring Joan Crawford.
 The screenplay by Anne Froelick and James Gunn was based upon the 1925 Pulitzer Prize-winning play "Craig's Wife", by George Kelly.
 The film was directed by Vincent Sherman, produced by William Dozier, and distributed by Columbia Pictures.
 "Harriet Craig" is the second of three cinematic collaborations between Sherman and Crawford, the others being "The Damned Don't Cry!
" (1950) and "Goodbye, My Fancy" (1951).
The Romance of Elaine is a 1915 American silent adventure film serial directed by George B. Seitz, Leopold Wharton and Theodore Wharton, based on the novel by Arthur B. Reeve.
 The film is considered to be lost.
The Damned Don't Cry is a 1950 American film noir crime-drama directed by Vincent Sherman and featuring Joan Crawford, David Brian, and Steve Cochran.
 It tells of a woman's involvement with an organized crime boss and his subordinates.
 The screenplay by Harold Medford and Jerome Weidman was based on the story "Case History" by Gertrude Walker.
 The plot is loosely based on the relationship of  Bugsy Siegel and Virginia Hill.
 The film was directed by Vincent Sherman and produced by Jerry Wald.
 "The Damned Don't Cry!"
 is the first of three cinematic collaborations between Sherman and Crawford, the others being "Harriet Craig" (1950) and "Goodbye, My Fancy" (1951).
Major General George B. McClellan is an equestrian statue in Washington, D.C. that honors politician and Civil War general George B. McClellan.
 The monument is sited on a prominent location in the Kalorama Triangle neighborhood due to efforts made by area residents.
 The statue was sculpted by American artist Frederick William MacMonnies, a graduate of the École des Beaux-Arts whose best known work is a statue of Nathan Hale in New York City.
 MacMonnies was chosen to design the statue following a lengthy competition organized by a statue commission, led by then Secretary of War William Howard Taft.
 The monument was dedicated in 1907, with prominent attendees at the ceremony including President Theodore Roosevelt, New York City mayor George B. McClellan, Jr., politicians, generals and thousands of military personnel.