NBC'sThesaurus catalog system and library of recordings was not completely merged with RCA's catalog until 1939 when the consolidation was completed in an effort to compete with rival transcription services which were available at the Mutual, Columbia and World Broadcasting Systems.

[3] During the 1950s, RCA Thesaurus produced under the musical direction of Ben Selvin in New York City.

[9][10] Copies of Serry's album and his original orchestral scores were subsequently donated years later to the Eastman School of Music's Sibley Music Library for archival purposes within the Ruth T. Watanabe Special Collections Department: John J. Serry Sr.

[11][12][13] By 1955, RCA Thesaurus continued to expand its musical library by including complete shows five times a week which showcased performances by several leading jazz artists including Sammy Kaye and Freddie Martin.

[15][16] By 1956, Ben Selvin also signed an agreement with the impresario Norman Granz which enhanced the RCA Thesaurus library to include performances by such jazz luminaries as: Count Basie, Roy Eldridge, Ella Fitzgerald, Stan Getz, Gene Krupa, Oscar Peterson, and Art Tatum.