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Series Index
The Bobbsey Twins I (1904–1979; 1989–1991; 2004)
The Bobbsey Twins II (1980–1986)
The Bobbsey Twins (Ready-to-Read) IV (2005–2006)
The Dana Girls Mystery Stories (1934–1979)
Frank and Joe Hardy are: The Clues Brothers (1997–2000)
The Hardy Boys [Television Series] (1995)
A Hardy Boys and Tom Swift Ultra Thriller (1992–1993)
The Hardy Boys are: The Clues Brothers: See Frank and Joe Hardy are: The Clues Brothers (1997–2000)
The Hardy Boys Casefiles (1987–1998)
The Hardy Boys Mystery Stories I (1927–1979; 2005)
The Hardy Boys Mystery Stories II (1979–2005)
The Hardy Boys Mystery Stories [Facsimile editions] (1991–2006)
Hardy Boys/Nancy Drew Mysteries [Television Series] (1977–1979)
The Hardy Boys Secret Files (2010–)
The Hardy Boys: The New Case Files [Graphic novel] (2010–)
The Hardy Boys: Undercover Brothers (2005–)
The Hardy Boys: Undercover Brothers [Graphic novel] (2005–2010)
Nancy Drew [Television Series] (1995)
A Nancy Drew and Hardy Boys SuperMystery (1988–1998)
Nancy Drew and the Clue Crew (2006–)
Nancy Drew and the Hardy Boys Be a Detective Mystery Stories (1984–1985)
The Nancy Drew Files (1986–1998)
Nancy Drew: Girl Detective (2004–)
Nancy Drew: Girl Detective and The Hardy Boys: Undercover Brothers Super Mystery (2006–)
Nancy Drew: Girl Detective [Graphic novel] (2005–2010)
Nancy Drew Mystery Stories I (1930–1979; 2005)
Nancy Drew Mystery Stories II (1979–2003)
Nancy Drew Mystery Stories [Facsimile editions] (1991–2006)
The Nancy Drew Notebooks (1994–2005)
Nancy Drew on Campus (1995–1998)
Nancy Drew: The New Case Files [Graphic novel] (2010–)
The New Bobbsey Twins (1987–1992)
The New Tom Swift Jr. Adventures (1954–1971)
Tom Swift [Facsimile editions] (1992)
Tom Swift, Young Inventor (2006–2007)