Title: Initiation: An Interactive Mystery, Author: Nathan Hoffmann
Title: Under the Sea: A coloring and activity adventure book, Author: Mindy Hoffmann
Title: Color Adventures Mandalas: An Adult Coloring Book, Author: Nathan Hoffmann
Title: Color Adventures Ocean Life, Author: Nathan Hoffmann
Title: Color Adventures Soothing Symmetries, Author: Nathan Hoffmann
Title: Line and Shape: An Abstract Line Art Coloring Book, Author: Nathan Hoffmann