Abstract The Mutual Broadcasting System, Inc. records contain more than 40,000 sound recordings, primarily in audiocassette and reel-to-reel audiotape format, as well as scripts and other supporting documents generated by the various shows produced by the Mutual Broadcasting System from the 1950's through the 1990's, including the Jim Bohannon show, 1993-2000 ; America this week, 1990-2000 ; First light, 1990-2000 ; Mike Walker show, 1990-1995 ; The week in review, 1984-2000 ; Seems like yesterday...