|Longines Chronoscope was a 15-minute interview television program, broadcast on CBS-affiliated television stations from 1951 to 1955. Longines-Wittnauer, a watch maker company, which sponsored and owned the copyright, donated the collection to the National Archives and conveyed all rights to the U.S. Government on December 19, 1969.
Originating in New York, Chronoscope was telecast weekly on Mondays from 11:00 to 11:15 p.m. on the CBS network. From June 11, 1951, the date of the earliest surviving issue, the show was broadcast Monday, Wednesday, and Friday evenings through April 29, 1955, with one hiatus from June to August 1953.
For more information consult A Catalog of Longines Chronoscope Interviews in the National Archives.