The Adventures of Barry Ween, Boy Genius (2001–2007) — book series in order

Manyebook

The Adventures of Barry Ween, Boy Genius 3 (2001)
The Adventures of Barry Ween, Boy Genius 4 (2002)
The Adventures of Barry Ween, Boy Genius 1 (2007)
The Adventures of Barry Ween, Boy Genius 2.0 (2007)