A list of notable events related to The Hardy Boys that happened in the 1950s.
- The Hardy Boys #32 The Crisscross Shadow and #33 The Yellow Feather Mystery are published, and for the first time in the 23-year history of the series more than one book is published in the same year.
- The first television adaption of The Hardy Boys, The Mystery of The Applegate Treasure, airs. This Walt Disney Mickey Mouse Club TV serial is based on The Tower Treasure.
- First comic book adaption of The Hardy Boys is published by Dell Comics, based on the Walt Disney TV serial.
- The second and final Walt Disney Mickey Mouse Club TV serial, The Mystery of Ghost Farm, airs.
- With the publication of The Hardy Boys #37 Ghost at Skeleton Rock, length of books is shortened from 220 pages to 180.
- For the first time in the 26-year history of the series, no new book is released.
- Revised, updated editions of The Hardy Boys #1 The Tower Treasure and #2 The House on the Cliff are published. This is the beginning of 14 years of revsions to the first 38 books in the series.
- The first spin-off of The Hardy Boys, The Hardy Boys' Detective Handbook released.
1920s: 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929