Dave O'Brien and Thelma White in Reefer Madness (1936)

Kenneth Craig and Dave O'Brien in Reefer Madness (1936)

Kenneth Craig, Lillian Miles, Dave O'Brien, Thelma White, and Carleton Young in Reefer Madness (1936)

Dave O'Brien, Dorothy Short, and Carleton Young in Reefer Madness (1936)

Warren McCollum, Dave O'Brien, Dorothy Short, and Thelma White in Reefer Madness (1936)

Ellen Hall, Reed Howes, Charles King, James Newill, Dave O'Brien, and Guy Wilkerson in Brand of the Devil (1944)

Dave O'Brien, Tom Tyler, and Roger Williams in Brothers of the West (1937)

John Wayne, Burr Caruth, Harrison Greene, LeRoy Mason, Dave O'Brien, Hal Price, and Eddy Waller in New Frontier (1939)

Alfred Delcambre, Buster Crabbe, Bruce Lane, and Dave O'Brien in Search for Beauty (1934)

Frank Ellis, Art Fowler, Herman Hack, Edward Howard, Charles King, Dave O'Brien, Tex Ritter, and Jack Hendricks in Three in the Saddle (1945)

Inna Gest, David Gorcey, Leo Gorcey, Bobby Jordan, and Dave O'Brien in Boys of the City (1940)

Robert Barron and Dave O'Brien in Gangsters of the Frontier (1944)

Richard Alexander, Roy Brent, Kermit Maynard, James Newill, Dave O'Brien, Jack Rockwell, and Michael Vallon in Gunsmoke Mesa (1944)

Marjorie Clements, Henry Hall, Dave O'Brien, and Guy Wilkerson in Dead or Alive (1944)

Dave O'Brien and Dorothy Page in The Singing Cowgirl (1938)

Ted Adams, Reed Howes, Dave O'Brien, Claire Rochelle, Bob Steele, and Carleton Young in Riders of the Sage (1939)

James Newill, Dave O'Brien, and Louise Stanley in Yukon Flight (1940)

Ethan Allen, Tom London, Ken Maynard, and Dave O'Brien in Flaming Lead (1939)

Dave O'Brien and Warner Richmond in Water Rustlers (1939)

Budd Buster, Ellen Hall, James Newill, Dave O'Brien, and Guy Wilkerson in Brand of the Devil (1944)

James Newill, Dave O'Brien, and Guy Wilkerson in Brand of the Devil (1944)

Buster Crabbe, Dave O'Brien, and Al St. John in Law and Order (1942)

Buster Crabbe, Bert Dillard, Kenne Duncan, John Merton, Dave O'Brien, Hal Price, and Al St. John in Law and Order (1942)

Jennifer Holt, James Newill, Dave O'Brien, and Guy Wilkerson in Guns of the Law (1944)

Dave O'Brien and Dorothy Short in Reefer Madness (1936)

Kay Aldridge, Alan Mowbray, and Dave O'Brien in The Phantom of 42nd Street (1945)