The Testing Block is a 1920 American silent Western film directed by Lambert Hillyer and written by Lambert Hillyer and William S. Hart.
 The film stars William S. Hart, Eva Novak, J. Gordon Russell, Florence Carpenter, Richard Headrick, and Ira McFadden.
 The film was released on December 26, 1920, by Paramount Pictures.
The Whistle is a 1921 American silent drama film directed by Lambert Hillyer and written by May Wilmoth, Olin Lyman and Lambert Hillyer.
 The film stars William S. Hart, Frank Brownlee, Myrtle Stedman, Georgie Stone, Will Jim Hatton, and Richard Headrick.
 The film was released in April 1921, by Paramount Pictures.
 A print of the film is in the Library of Congress.
Travelin' On is a 1922 American silent Western film directed by Lambert Hillyer and written by William S. Hart and Lambert Hillyer.
 The film stars William S. Hart, James Farley, Ethel Grey Terry, Brinsley Shaw, Mary Jane Irving, Bob Kortman, and Willis Marks.
 The film was released on March 5, 1922, by Paramount Pictures.
 A copy of the film is in the Library of Congress.
Square Deal Sanderson is a 1919 American silent western film directed by William S. Hart and Lambert Hillyer and written by Lambert Hillyer and Charles Alden Seltzer.
 The film stars William S. Hart, Ann Little, Frank Whitson, Lloyd Bacon, Edwin Wallock and Tom O'Brien.
 The film was released on June 15, 1919, by Paramount Pictures.
 A print of the film is held by the Library of Congress and in other film archives.
The Toll Gate is a 1920 American silent Western film directed by Lambert Hillyer and written by Lambert Hillyer and William S. Hart.
 The film stars William S. Hart, Anna Q. Nilsson, Joseph Singleton, Jack Richardson, and Richard Headrick.
 The film was released on April 15, 1920, by Paramount Pictures.
Lambert Harwood Hillyer (July 8, 1893 – July 5, 1969) was an American film director and screenwriter.
The Cradle of Courage is a 1920 American silent drama film directed by Lambert Hillyer and written by Frederick Bradbury and Lambert Hillyer.
 The film stars William S. Hart, Ann Little, Tom Santschi, Gertrude Claire, Frank Thorwald, and George Williams.
 The film was released on September 19, 1920, by Paramount Pictures.
Copies of the film are in the Museum of Modern Art and at other film archives.
O'Malley of the Mounted is a surviving 1921 American silent Western film directed by Lambert Hillyer and written by Lambert Hillyer and William S. Hart.
 The film stars William S. Hart, Eva Novak, Leo Willis, Alfred Allen, Bert Sprotte, and Antrim Short.
 The film was released on February 6, 1921, by Paramount Pictures.
Upendra Rao (born 18 September 1968) known mononymously as Upendra, is an Indian filmmaker, actor and politician known for his work in Kannada cinema.
 He started his career under actor and film director Kashinath, as a writer and an assistant director.
 His first directorial venture was "Tharle Nan Maga" (1992).
The Money Corral is a 1919 American silent adventure film directed by Lambert Hillyer and written by William S. Hart and Lambert Hillyer.
 The film stars William S. Hart, Jane Novak, Herschel Mayall, Winter Hall, Rhea Mitchell, and Patricia Palmer.
 The film was released on April 20, 1919, by Paramount Pictures.
 It is not known whether the film currently survives, and it may be a lost film.

Question: Did Lambert Hillyer and Upendra work in the same industry?
Answer: yes