Well, I found all of these on Google video, so here they are. These IMHO are all very good movies, so you won't be wasting your time in watching any of them. There were lots of others (mostly low budget, B-movies with actors I've never heard of before), so I've sifted through them and posted the cream of the crop here. Here are all the non-Duke titles (all the Duke movies are listed seperately at the bottom):
Captain Kidd (1945)
http://video.google.com/google…7768531471485330485&hl=en
Beat The Devil (1953)
http://video.google.com/google…9052568461937082317&hl=en
Bird of Paradise (1932)
http://video.google.com/google…7935634736012705942&hl=en
Jungle Book (1942)
http://video.google.com/google…308038681979259&hl=en
The Black Book (1949)
http://video.google.com/google…3778874848855373514&hl=en
Mutiny (1952)
http://video.google.com/google…-729866009297839601&hl=en
Beneath the 12-Mile Reef (1953)
http://video.google.com/google…187030458118241&hl=en
Long John Silver (1954)
http://video.google.com/google…8836297929506863295&hl=en
Gulliver's Travels (1939)
http://video.google.com/google…572837452165920&hl=en
The Jackie Robinson Story (1950)
http://video.google.com/google…115611870612113&hl=en
Baby Face Morgan (1942)
http://video.google.com/google…7262896425903387877&hl=en
Angel On My Shoulder (1946)
http://video.google.com/google…Id=4152722013320618869&hl
Africa Screams (1949)
http://video.google.com/google…434980630568254&hl=en
Eternally Yours (1939)
http://video.google.com/google…=-92081404351580899&hl=en
Little Men (1940)
http://video.google.com/google…2958278547831928367&hl=en
Pot O' Gold (1941)
http://video.google.com/google…9143134020073297279&hl=en
The Grass is Greener (1960)
http://video.google.com/google…d=-3769564658761381563=en
Suddenly (1954)
http://video.google.com/google…7597138111430843998&hl=en
Scarlet Street (1945)
http://video.google.com/google…5621570318718470302&hl=en
Dishonored Lady (1947)
http://video.google.com/google…4770939905753077530&hl=en
The Fast and the Furious (1955)
http://video.google.com/google…328197962316455&hl=en
Swamp Women (1955)
http://video.google.com/google…5840358478889083944&hl=en
Gangster Story (1960)
http://video.google.com/google…4999759973199375863&hl=en
Great Guy (1936)
http://video.google.com/google…1741300237872558208&hl=en
Martin Luther (1953)
http://video.google.com/google…1360184267706049338&hl=en
Oliver Twist (1933)
http://video.google.com/google…=2647054928514299616&q=en
The Amazing Quest of Ernest Bliss (1936)
http://video.google.com/google…6486254891614440611&hl=en
The Long Shot (1939)
http://video.google.com/google…7133435020453525808&hl=en
Beyond Tomorrow (1940)
http://video.google.com/google…8623203498712026439&hl=en
Meet John Doe (1941)
http://video.google.com/google…-5136596607482667346&q=en
It's A Wonderful Life (1946)
http://video.google.com/google…-4867975537967299162&q=en
The Big Trees (1952)
http://video.google.com/google…906370414928754&hl=en
Cyrano de Bergerac (1950)
http://video.google.com/google…2552960613475355341&hl=en
The Fighter (1952)
http://video.google.com/google…2953916466332667037&hl=en
Our Town (1940)
http://video.google.com/google…1158331896537306693&hl=en
The Healer (1935)
http://video.google.com/google…7295892808283254707&hl=en
Hell's House (1932)
http://video.google.com/google…7516232885470608290&hl=en
Little Lord Fauntleroy (1936)
http://video.google.com/google…7120160472321074843&hl=en
The Rise of Catherine The Great (1934)
http://video.google.com/google…=127318081340774064&hl=en
Abraham Lincoln (1930)
http://video.google.com/google…5739796553959454592&hl=en
Constantine and the Cross (1962)
http://video.google.com/google…3410534240741161662&hl=en
http://video.google.com/google…-988150624981287567&hl=en
http://video.google.com/google…5491821549103548134&hl=en
http://video.google.com/google…7423374188350075984&hl=en
http://video.google.com/google…4706697301325825363&hl=en
Bluebeard (1944)
http://video.google.com/google…2108033476419894908&hl=en
Dracula (1931)
http://video.google.com/google…1951778873752026088&hl=en
Happy Go Lovely (1951)
http://video.google.com/google…4637510687236587207&hl=en
The Inspector General (1949)
http://video.google.com/google…3451692590204916738&hl=en
Jack and the Beanstalk (1952)
http://video.google.com/google…4322093034682228723&hl=en
The Little Princess (1939)
http://video.google.com/google…4412215713074385621&hl=en
Harmony Lane (1935)
http://video.google.com/google…6295337076126613391&hl=en
Royal Wedding (1951)
http://video.google.com/google…=8209432798026415720&q=en
Till The Clouds Roll By (1946)
http://video.google.com/google…=170532654482604679&hl=en
Second Chorus (1940)
http://video.google.com/google…7590413817466201920&hl=en
D.O.A. (1950)
http://video.google.com/google…192259821201896&hl=en
Dressed To Kill (1946)
http://video.google.com/google…300005439660604&hl=en
The Woman In Green (1945)
http://video.google.com/google…6984881137359838398&hl=en
The Secret Weapon (1943)
http://video.google.com/google…2671463631838051578&hl=en
Algiers (1938)
http://video.google.com/google…=7780740801547017564&q=en
The Sword of Sir Lancelot (1963)
http://video.google.com/google…3675598958850980248&hl=en
The Last Time I Saw Paris (1954)
http://video.google.com/google…=3569065912674749499&q=en
My Man Godfrey (1936)
http://video.google.com/google…542197649881091&hl=en
His Girl Friday (1940)
http://video.google.com/google…6759515366249007357&hl=en
My Favorite Brunette (1947)
http://video.google.com/google…199726629069440&hl=en
Made For Each Other (1939)
http://video.google.com/google…1258927468496011396&hl=en
Nothing Sacred (1937)
http://video.google.com/google…4934787574390847516&hl=en
Things To Come (1936)
http://video.google.com/google…8876180018878952272&hl=en
The Day The Earth Stood Still (1951)
http://video.google.com/google…d=850123940936316998&q=en
The Thing from Another World (1951)
http://video.google.com/google…8858631745646781857&hl=en
Them! (1954)
http://video.google.com/google…-828076470184247942&hl=en
The Man Who Knew Too Much (1934)
http://video.google.com/google…522761768258436&hl=en
The 39 Steps (1935)
http://video.google.com/google…115995112033502&hl=en
The Stranger (1946)
http://video.google.com/google…255400402178479&hl=en
The Red House (1947)
http://video.google.com/google…3652673244040767216&hl=en
A Farewell To Arms (1932)
http://video.google.com/google…3572244595883183374&hl=en
A Walk In The Sun (1945)
http://video.google.com/google…8697175820424941535&hl=en
Go For Broke (1951)
http://video.google.com/google…8898535258299932158&hl=en
http://video.google.com/google…8898535258299932158&hl=en
Daniel Boone (1936)
http://video.google.com/google…8862557433553552121&hl=en
Santa Fe Trail (1940)
http://video.google.com/google…7229528168169320559&hl=en
One Eyed Jacks (1961)
http://video.google.com/google…3904356691955446551&hl=en
Border Patrol (1943)
http://video.google.com/google…8554856497347644435&hl=en
The Outlaw (1943)
http://video.google.com/google…845801951323179&hl=en
Lumberjack (1944)
http://video.google.com/google…2313044570457258708&hl=en
Abilene Town (1946)
http://video.google.com/google…5838702466901842627&hl=en
There were only four Duke movies, though.
Hell Town (1938)
http://video.google.com/google…6355685066775245910&hl=en
McLintock! (1963)
http://video.google.com/google…-486066500905258647&hl=en
Texas Terror (1935)
http://video.google.com/google…-581775383847054746&hl=en
West of the Divide (1934)
http://video.google.com/google…2422364786405723286&hl=en