Hardy Boys Supplement books

[MacGyver]

I ran across this online- wow! It seems to be a list of various Stratemeyer Syndicate book series and related merchandise, dating from the late 1800s to 1984. Quite interesting to peruse.

[tomswift2002]

The New York Public Library (which is where your link goes) has an extensive catalog of Stratemeyer Syndicate files, including the manuscripts for "Tom Swift #12: Chaos On Earth" and "Tom Swift #13: Microworld", and other cancelled Stratemeyer titles.  Unfortunately the Casefiles-type Hardy Boys #86 is not part of these files, since the NYPL files only go up to 1984, whereas #86 was from 1985-86.

[MacGyver]

Yeah- I just found that by accident. It is really interesting to see all that was and could have been. Maybe it'd be worth investigating at the New York Public Library to see if they would have any further Stratemeyer Syndicate files from later years...