September in music history - To Know You Is to Love You, by B.B. King (1973):

The album To Know You Is to Love You, 

by B.B. King, 

was released in September, 1973.
Exact release date unknown.

On this day in movie history - Electra Glide in Blue (1973):

Electra Glide in Blue,

directed by James William Guercio,

written by Robert Boris,

based on a story by Robert Boris and Rupert Hitzig,

was released in the United States on August 19, 1973.
Music by James William Guercio.

Cast:
Robert Blake, Billy "Green" Bush, Mitchell Ryan, Jeannine Riley, Elisha Cook, Royal Dano, Hawk Wolinski, Peter Cetera, Terry Kath, Lee Loughnane, Walter Parazaider, Joe Samsil, Jason Clark, Michael Butler, Susan Forristal, Nick Nolte.

On this day in movie history - Westworld (1973):

Westworld,

directed and written by Michael Crichton,

was released in the United States on August 17, 1973.
Music by Fred Karlin.

Cast:
Yul Brynner, Richard Benjamin, James Brolin, Alan Oppenheimer, Victoria Shaw, Dick Van Patten, Linda Gaye Scott, Steve Franken, Michael Mikler, Terry Wilson, Majel Barrett, Anne Randall, Nora Marlowe, Charles Seel, Robert Patten, Julie Marcus, Chris Holter.

On this day in movie history - Night Watch (1973):

Night Watch,

directed by Brian G. Hutton,

written by Evan Jones and Tony Williamson,

based on the play by Lucille Fletcher,

was released in the United States on August 10, 1973.
Music by John Cameron.

Cast:
Elizabeth Taylor, Laurence Harvey, Billie Whitelaw, Robert Lang, Tony Britton, Bill Dean, Michael Danvers-Walker, Rosario Serrano, Pauline Jameson, Linda Hayden, Kevin Colson, Laon Maybanke, David Jackson.

On this day in movie history - White Lightning (1973):

White Lightning,

directed by Joseph Sargent,

written by William W. Norton,

was released in the United States on August 8, 1973.
Music by Charles Bernstein.

Cast:
Burt Reynolds, Jennifer Billingsley, Ned Beatty, Bo Hopkins, Matt Clark, Louise Latham, Diane Ladd, R.G. Armstrong, Conlan Carter, Dabbs Greer, Lincoln Demyan, John Steadman, Iris Korn, Stephanie Burchfield, Barbara Muller, Robert Ginnaven, Fay Martin, Richard Allin, Bill Bond, Sherry Boucher, Glenn R. Wilder, Dick Ziker, Buddy Joe Hooker, Cathy Finley, Laura Dern, Bob Meriwether.

On this day in movie history - The Stone Killer (1973):

The Stone Killer,

directed by Michael Winner,

written by Gerald Wilson,

based on the novel A Complete State of Death by John Gardner,

was released in the United States on August 8, 1973.
Music by Roy Budd.

Cast:
Charles Bronson, Martin Balsam, Jack Colvin, Paul Koslo, Norman Fell, David Sheiner, Stuart Margolin, Ralph Waite, Alfred Ryder, Walter Burke, Kelley Miles, Eddie Firestone, Charles Tyner, Byron Morrow, Lisabeth Hush, Frank Campanella, Gene Woodbury, Robert Emhardt, David Moody, John Ritter, Mary Cross, Harry Basch, Tom Falk, Jan Arvan, Barry Cahill, Richard Armbruster, Ed Madsen, Arthur French, William J. Daprato, Hy Anzell, Ta-Tanisha, Hoke Howell, Hunter von Leer, Sam Locante, Norman D. Wilson, Larry J. Blake, Frenchia Guizon, Denny Arnold, Roberta Collins, Jack English, John Hudkins, Ernie F. Orsatti, Christa Raines, Chuck Roberson, Angelo Rossitto, Lew Sleeman, Robert Snively.

On this day in movie history - American Graffiti (1973):

American Graffiti,

directed by George Lucas,

written by George Lucas, Gloria Katz and Willard Huyck,

was released in the United States on August 1, 1973.
Music by Kim Fowley, Karin Green and George Lucas.

Cast:
Richard Dreyfuss, Ron Howard, Paul Le Mat, Charles Martin Smith, Cindy Williams, Candy Clark, Mackenzie Phillips, Wolfman Jack, Bo Hopkins, Manuel Padilla Jr., Beau Gentry, Harrison Ford, Jim Bohan, Jana Bellan, Deby Celiz, Lynne Marie Stewart, Terence McGovern, Kathleen Quinlan, Ty Crowley, Scott Beach, John Brent, Gordon Analla, John Bracci, Jody Carlson, Del Close, Chuck Dorsett, Stephen Knox, Joe Miksak, George Meyer, James Cranna, Johnny Weissmuller Jr., William Niven, Al Nalbandian, Bob Pasaak, Christopher Pray, Susan Richardson, Fred Ross, Jan Dunn, Charlie Murphy, Ed Greenberg, Lisa Herman, Mark Anger, Kay Lenz, Caprice Schmidt, Joe Spano, Debralee Scott, Ron Vincent, Donna Wehr, Cam Whitman, Jan Wilson, Suzanne Somers, Flash Cadillac, Linda Christensen, Jeannette Dilger, Dennis Falt, Warren Knight, Paul Lambert, Ken Martinez, Rick May, Sam McFadin, Kris Moe, Linn Phillips III, George Robinson.

On this day in movie history - The Mackintosh Man (1973):

The Mackintosh Man,

directed by John Huston,

written by Walter Hill and William Fairchild,

based on the novel The Freedom Trap by Desmond Bagley,

was released in the United States on July 25, 1973.
Music by Maurice Jarre.

Cast:
Paul Newman, Dominique Sanda, James Mason, Harry Andrews, Ian Bannen, Michael Hordern, Nigel Patrick, Peter Vaughan, Roland Culver, Percy Herbert, Robert Lang, Leo Genn, Jenny Runacre, John Bindon, Hugh Manning, Wolfe Morris, Noel Purcell, Donald Webster, Keith Bell, Niall MacGinnis, Eddie Byrne, Shane Briant, Michael Poole, Eric Mason, Ronald Clarke, Antony Viccars, Dinny Powell, Douglas Robinson, Jack Cooper, Marc Boyle, Marcelle Castillo, Nosher Powell, Terry Plummer, Joe Cahill, Gerry Alexander, John McDarby, Donal McCann, Joe Lynch, Seamus Healy, Tom Irwin, Pascal Perry, Steve Brennan, Vernon Hayden, Brendon O'Duill.

On this day in movie history - The Friends of Eddie Coyle (1973):

The Friends of Eddie Coyle,

directed by Peter Yates,

written by Paul Monash,

based on the novel by George V. Higgins,

was released in the United States on June 27, 1973.
Music by Dave Grusin.

Cast:
Robert Mitchum, Peter Boyle, Richard Jordan, Steven Keats, Alex Rocco, Joe Santos, Mitchell Ryan, Peter MacLean, Kevin O'Morrison, Marvin Lichterman, Carolyn Pickman, James Tolkan, Margaret Ladd, Matthew Cowles, Helena Carroll, Jack Kehoe, Jan Egleson, Jane House, Michael McCleery, Alan Koss, Dennis McMullen, Judith Ogden Cabot, Robert Anthony, Gustave Johnson, Sheldon Feldner, Ted Maynard, Lloyd Bremseth, Ben Lautman, Bobby Orr, Falko Schilling, Donald Warnock.