Untitled (railroad bridge above canal, left page); Untitled (interior scene, right page)

Graphite on paper

Blue marker and black pen on paper

Graphite on paper

Graphite and brown ink on white paper

Colored marker and black pen on paper

Black and red marker on paper

Graphite on off-white wove paper

Colored marker and black pen on paper

Black marker on paper

Black marker on paper

Black marker on paper, staples, and gray marker on paper

Ink on paper