Research into historic drafting practices used in engineering, architecture, and industrial design. Drawings employing traditional hard tools and methodologies.

Draftings produced using geometric perspective.

Sketchbooks created on site in southeastern Montana documenting dinosaur excavations.

Sketchbooks chronicling research into historical materials and methods and preperatory designs for paintings.

Drawings investigating an unsolved problem in pure geometry.

A typeface constructed with isometric projection called House Mouse.