English: Robert Montgomery before a senate committee in Washington, D.C. on April 3, 1939. The S.R.O. sign was hung out today at the Senate Interstate Commerce Committee Hearing as Montgomery appeared to express his opposition to a bill designed to prohibit "Block booking" and "Blind selling"—two trade practices which curb the discretion that a movie house owner has in selecting pictures to be shown in his community. Speaking as a former President of the Screen Actors Guild, Montgomery told the Committee that the Guild and their lawyers have come to the very definite conclusion that if the bill should become a law it would cut in half the production schedules of the motion picture industry.