Process photography expert, specializing in matte painting and set design, at MGM for over 200 films over a 22-year period, including such classic films as DR. JEKYLL AND MR. HYDE (1941), TORTILLA FLAT (1942), GASLIGHT (1944), EASTER PARADE (1948), ON THE TOWN (1949), ANNIE GET YOUR GUN (1950), AN AMERICAN IN PARIS (1951) and SINGIN' IN THE RAIN (1952). He also acted as the Director of Set Painting for THE WIZARD OF OZ (1939). Often teamed with A. Arnold Gillespie. Newcombe was also an accomplished painter and lithographer, whose work is exhibited and sold nationwide.

Nominated for Special Effects 1942: MRS. MINIVER - Photographic (w. A. Arnold Gillespie)  Special Effects 1944: THIRTY SECONDS OVER TOKYO - Photographic (w. A. Arnold Gillespie & Donald Jahraus)  Special Effects 1947: GREEN DOLPHIN STREET - Photographic (w. A. Arnold Gillespie)  Special Effects 1952: PLYMOUTH ADVENTURE - No credit listed, but film credits Warren Newcombe & Irving G. Ries 4 nominations, 3 Awards