| The following page represents the number of pre-emptions that delayed
many telecasts of the series.  Comparing these pre-emption dates per
season with gaps in airdates in the first-run seasons; the "gaps", where
there are skipped airdates, are now filled with other programming NBC
decided to air, from 1959 to 1972.  I have also included a small array of
episodes NBC decided to rerun during the first-run seasons, and not
during the rerun seasons.  An additional eight first-run episodes were
reran, separately from the summer reruns seasons, a grand total of 239
first-run episodes reran, combined with the summer reruns of 14
years, from 1959 to 1973. | 
|  Season One Pre-Emptions and Reruns | 
| 1.) December 26, 1959 The Paiute War Note: Reran during first-run season. 2.) March 12, 1960 Death On Sun Mountain Note: Reran during first-run season. | 
| Season Two Pre-Emptions and Reruns | 
| 3.) November 7, 1960 The Henry Comstock Story Note: First-run episode from season one, reran during season two. 4.) December 24, 1960 El Toro Grande Note: First-run episode from season one, reran during season two. 5.) March 25, 1961 Pre-empted for All-Star Circus 6.) May 13, 1961 The Hopefuls Note: First-run episode from season two that was reran just prior to the end of season two in May 1961. | 
| Season Three Pre-Emptions | 
| 7.) March 25, 1962 telecast pre-empted for: "Project 28: The Real West" | 
| Season Four Pre-Emptions | 
| 8.) November 11, 1962 telecast pre- empted for: "The Danny Kaye Show" 9.) April 14, 1963 telecast pre-empted for: "The Bob Hope Show" | 
| Season Five Pre-Emptions | 
| 10.) December 1, 1963 telecast pre- empted for: "World's Greatest Showman" (Cecile B. DeMille) | 
| Season Six Pre-Emptions | 
| 11.) November 24, 1964 telecast was pre-empted for a repeat of: "World's Greatest Showman" (Cecile B. DeMille) 12.) March 14, 1965 telecast was pre- empted for: Danny Thomas | 
| Season Seven Pre-Emptions | 
| 13.) November 28, 1965 telecast pre- empted for: Julie Andrews 14.) March 13, 1966 telecast pre-empted for: Danny Thomas | 
| Season Eight Pre-Emptions | 
| 15.) March 19, 1967 telecast pre-empted for: "Annie Get Your Gun" | 
| Season Nine Pre-Emptions and Reruns | 
| 16.) December 31, 1967 A Time To Step Down Note: Season eight episode that was reran during the first-run ninth season, 1967-68. 17.) March 24, 1968 telecast pre-empted for: "Ice Capades" 18.) March 31, 1968~In Defense Of Honor Note: This season nine episode was to originally air on the above date, but was postponed because of a nationwide speech by President Lyndon B. Johnson. Later aired on April 18, 1968. 19.) April 21, 1968 telecast was pre- empted by: Frank Sinatra | 
| Season Ten Pre-Emptions and Reruns | 
| 20.) November 24, 1968 telecast pre- empted for: Peggy Fleming 21.) December 29, 1968 Pride Of A Man Note: Season nine episode reran during the first-run tenth season, 1968-69. 22.) February 16, 1969 telecast pre- empted for: "Ice Capades 1969" 23.) May 4, 1969~Salute To Yesterday Note: Season ten episode reran just prior to the end of the tenth season's first-run season, 1968-1969. | 
| Season Eleven Pre-Emptions | 
| 24.) November 30, 1969 telecast pre- empted for: Peggy Fleming | 
| Season Twelve Pre-Emptions | 
| 25.) December 5, 1970 telecast was pre- empted for: "Dick Van Dyke meets Bill Cosby" | 
| Season Thirteen Pre-Emptions | 
| 26.) December 7, 1971 telecast was pre- empted for: "To Europe With Love" (Peggy Fleming) | 
| Season Fourteen Pre-Emptions | 
| 27.) October 17, 1972 telecast was pre- empted for: World Series 28.) November 7 telecast was pre- empted for: Election Coverage 29.) November 21 telecast was pre- empted for: "West Side Story" | 
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