Rex Hazlewood was a long-serving official of The Scout Association, as its editor of The Scout and The Scouter magazines and author of articles, pamphlets and books on Scouting.
Hazlewood wrote a number of instructional Scouting books, primarily on the subject of Scoutcraft. Many of his books were co-authored with his friend John Thurman.
- 1949: The Campfire Leader's Book (with John Thurman)
- 1952: Scout Camps: A Book for Scouters (with John Thurman)
- 1957: The Gilwell Camp Fire Book: Songs and yells from fifty years of Scouting (with John Thurman)
- 1958: The Scoutmaster's guide from A to Z (revised and retitled in 1968 as The Scout leader's guide from A to Z)
- 1959: Some Training Ideas for Scouts (with John Thurman)
- 1960: Camping (with John Thurman)
- 1961: B-P's Scouts: an official history of The Boy Scouts Association Colins, London (with Henry Collis and Fred Hurll)
- 1961: The Scout Annual – 1962 C. Arthur Pearson Ltd.
- 1962: The Second Gilwell Camp Fire Book: A further collection of songs and yells from fifty years of Scouting (with John Thurman)
- 1964: Summer Camp All Year Round (with John Thurman)
- 1969: The Gilwell Story (with John Thurman)