Favorite films between 35 - 70 minutes

My favorite film of this ilk is Illusions (Julie Dash 1982). But it's one minute short of 35 mins. However, these fit: 

Apart From You (Mikio Naruse 1933)
The Argyle Secrets (Cy Endfield 1948)
Avalanche (Mikio Naruse 1937)
Beauty #2 (Andy Warhol 1965)
The Black Cat (Edgar G. Ulmer 1934)
Blood Money (Rowland Brown 1933)
California Frontier (Elmer G. Clifton 1938)
Call Me Madame (Francoise Romand 1986)
Camp (Andy Warhol 1965)
La cicatrice intérieure (Philippe Garrel 1972)
The Circle (Frank Borzage 1925) (pictured below)
Cowards Bend the Knee (Guy Maddin 2003)
Crimes at the Dark House (George King 1940)
The Curse of the Cat People (Gunther von Fritsch and Robert Wise 1944)
The Deadman (Peggy Ahwesh and Keith Sanborn 1989)
Eadweard Muybridge, Zoopraxographer (Thom Andersen 1974)
Eat (Andy Warhol 1963)
Exterior Night (Mark Rappaport 1993)
A Family Finds Entertainment (Ryan Trecartin 2005)
Film Ist (Gustav Deutsch (1998-2004) 
Final Flesh  (Vernon Chatman 2009)
Flaming Creatures (Jack Smith 1963)
Flunky, Work Hard! (Mikio Naruse 1931)
From the Notebook of... (Robert Beavers 1971/1998)
The Girl From Chicago (Oscar Micheaux 1932)
The Girl in the Rumor (Mikio Naruse 1935)
Guru, the Mad Monk (Andy Milligan 1970)
La glace à trois faces (Jean Epstein)
Handsworth Songs (John Akomfrah/Black Audio Film Collective 1986)
Hedy (Andy Warhol 1966)
Hell's Highway (Rowland Brown 1932)
Hideko The Bus Conductress (Mikio Naruse 1941)
Horse Feathers (Norman Z. McLeod 1932)
The Hours and Times (Christopher Munch 1991)
The Hypothesis of the Stolen Painting (Raul Ruiz 1979)
Inside A.M.G.: The Athletic Model Guild (probably Bob Mizer 1970)
Kunst Life (Roger Jacoby 1975)
The Life of Juanita Castro (Andy Warhol 1965)
Lonesome (Paul Fejos 1928)
Lost Book Found (Jem Cohen 1996)
Lost In The Thinking (Damon Packard 2005)
Mammame (Raul Ruiz 1987)
Mirrors Facing Mirrors (Adam Cooley 2010)
Mix-Up (Francoise Romand 1985)
(nostalgia) (Hollis Frampton 1971)
Notes of an Early Fall (Saul Levine 1976-77)
One Way Boogie Woogie (James Benning 1977)
The Oyster Princess (Ernst Lubitsch)
Page of Madness (Teinosuke Kinugasa 1926)
The Passing (Bill Viola 1991)
Pink Narcissus (James Bidgood 1971)
Pointed Heels (A. Edward Sutherland 1929)
Radio Ranch (aka Men With Steel Faces) (Otto Brower & B. Reeves Eason 1940)
Rock Hudson's Home Movies (Mark Rappaport 1992)
Sally in Our Alley (Maurice Elvey 1931)
The Seventh Victim (Mark Robson 1943) - One minute over but deal - a masterpiece of concision anyway.
Sherlock Jr. (Buster Keaton 1924)
Side/Walk/Shuttle (Ernie Gehr 1991)
Sluts & Goddesses Video Workshop (Annie Sprinkle and Maria Beatty 1992)
The Song of Home (Kenji Mizoguchi 1925)
SpaceDisco One (Damon Packard 2007)
Standard Gauge (Morgan Fisher 1984)
The Star Witness (William A. Wellman 1931)
Symphony for a Sinner (George Kuchar 1979) 
Take An Easy Ride  (Kenneth Rowles (1976)
Tales of The Valley of The Wind (Damon Packard 2009)
The Target Shoots First (Chris Wilcha 1998)
Tearoom (William Jones 2007)
That Night's Wife (Yasujiro Ozu 1930)
The End (Christopher Maclaine 1953)
A Time for Dying (Budd Boetticher 1969)
Twice A Man (Gregory J. Markopoulos 1964)
Valley of Hunted Men (John English 1942)
Vinyl (Andy Warhol 1965)
Water and Power (Pat O'Neill 1989)
Wild Boys of the Road (William A. Wellman 1933)
The Wishing Ring (Maurice Tourneur 1914)
Young America (Frank Borzage 1932)