Quizzes: Hardy Boys
- Fan-created tests of knowledge about the books and characters.
- http://www.funtrivia.com/quizzes/for_children/books_by_series/hardy_boys.html

The Hardy Boys Cartoon Info
- List of Filmation's animated series of the late 1960s and early 1970s.
- http://www.bcdb.com/cartoons/Filmation_Associates/H-R/The_Hardy_Boys/

Journal of the Hardy Boys Literary Society
- Features many tongue-in-cheek articles about the Hardy Boys.
- http://hbls.blogspot.com/

Lost In The Past Presents The Hardy Boys
- Features information on the 1970's ABC TV show.
- http://www.lostinthepast.net/Hardy/hardyboys.html

Remembering Hardy Boys author Leslie McFarlane
- CBC audio interview with the original Hardy Boys author, Leslie McFarlane.
- http://archives.cbc.ca/400d.asp?id=1-68-292-1543-20&wm6=1

Perky fellows in a gay-looking speedwagon: The Hardy Boys return
- Salon Magazine's brief article on the history of the Hardy Boys and the reissue of the original stories.
- http://www.salon.com/mwt/feature/1999/10/07/hardy_boys/print.html

The Hardy Boys Unofficial Home Page
- Provides details of books and television shows, as well as FAQ, cover art scans, message board, and the Bayport Times newsletter.
- http://hardyboys.bobfinnan.com

Hardy Detective Agency
- Fan site with information about the books and Hardy Boys fan fiction.
- http://www.hardydetectiveagency.com

Who Wrote the Hardy Boys?
- Examines the individuals who outlined, wrote, edited, and revised each book in the series under the collective pen name of Franklin W. Dixon.
- http://www.keeline.com/Hardy_Boys.pdf

SkyWarp's Hardy Boys Casefiles
- Includes cover scans, character appearances, locations guide, forums, book summaries, and site updates. Also includes information on the Hardy Boys: Undercover Brothers series.
- http://www.hardyboyscasefiles.com/