Charles David Farrell (August 9, 1900 – May 6, 1990) was an American film actor of the 1920s silent era and into the 1930s, and later a television actor. Farrell is probably best recalled for his onscreen romances with actress Janet Gaynor in more than a dozen films, including 7th Heaven, Street Angel, and Lucky Star. Later in life, he starred on TV in the 1950s sitcoms My Little Margie and playing himself in The Charles Farrell Show. He was active in business and civic affairs in Palm Springs, California, serving for a time as mayor.

Being a still photographer, Stax Graves was apparently never given onscreen credit, and indeed, this filmography is limited to the few films for which he's given "uncredited" credit in the Internet Movie Database. Exactly when Graves started with Hal Roach Studios and when he departed is not entirely clear. Very little is mentioned about him in the various books written about the Roach comedians. But we do know that Graves was working with the Roach studio by the beginning of August 1922, the point in time when the studio payroll summaries begin to name names. It's clearly possible that Graves was taking Our Gang photos from the very start of the series. 

Graves also shot still photos for all of the various other series at Roach, and IMDb lists his involvement with four of the Laurel & Hardy features made in the late thirties. He presumably stayed with Roach as Our Gang moved on to MGM, so his association with that series would have lasted from 1922 until 1938. It's more than apparent that he shot still photos for scores of Our Gang films, since his name appears on the backs of quite a few press photos, where he's identified simply as "Stax."