found: The Border patrolman [MP] 1936:credits (produced by Sol Lesser)
found: Ernst Lubitsch's That uncertain feeling, ©2007:title frame (Sol Lesser presents) opening credits (a Lubitsch-Lesser production)
found: Performing arts biog. master index, 1981(Sol Lesser; b. 1890 d. 1980)
found: Katz, E. The film encyclopedia, ©2008:page 857 (Sol Lesser; producer; born February 17, 1890, Spokane, Washington; died 1980; he went into production in the 30s; produced many serials, low-budget Westerns, and Tarzan pictures, as well as occasional quality films; in 1941 he joined RKO as an executive in charge of feature production but resigned soon after to set up his own production company)
found: Halliwell's filmgoer's and video viewer's companion, ©1993:page 473 (Sol Lesser, 1890-1980; American pioneer exhibitor of silent days, later producer; many Tarzan films)
found: Quigley, M.S. First century of film, ©1995:pages 179-180 (Sol Lesser; producer; entered motion picture industry as circuit operator, founding Fox West Coast Theatres; formed Principal Theatres Corp., Principal Pictures Corp.; turned to film production in the early 1930's; in 1941 joined RKO Radio as executive in charge of feature production; resigned to organize and serve as president of Sol Lesser Productions, Inc., 1945)
found: IMDb, April 15, 2015(Sol Lesser, 1890-1980; producer, director; born February 17, 1890 in Spokane, Washington; died September 19, 1980 in Hollywood, California; went into film production full-time in the 1930s with his own company, Principal Pictures Corp., concentrating on mainly on low-budget westerns and Tarzan pictures; joined RKO in 1941 as executive in charge of feature production)
found: New York times, via WWW, April 15, 2015:movies & TV (Sol Lesser, exhibitor, producer, movie chain owner; Lesser followed in his father's footsteps, eventually running his own theatre chain and distribution center; produced silent-era films)
found: Hollywood renegades archives, via WWW, April 15, 2015:Sol Lesser (SIMPP member, 1942-1958; experience in all three branches of the film industry; became a vertically-integrated mainstay at First National; founded the West Coast Theatres in 1920; independent producer with his own company called Principle Pictures; purchased a small Los Angeles theater that became the start of his Principle Theatres chain; formed the Principle Distributing Corporation, and later created his own financing operation, the Principle Securities Corporation; joined SIMPP in 1942)