Keystone of an Arch, Frontal View and Profile; verso: Sketches of a Ground Plan and a Nude Male Figure

Colored marker on paper

Colored marker on paper

Brown ink over graphite on off-white laid paper

Red marker and black pen on paper

Red chalk on cream antique laid paper; verso: red chalk

Transparent and opaque watercolor and brown ink over graphite on cream antique laid paper, partial framing line in graphite

Paper

Graphite on off-white wove paper

Black marker, paper, adhesive, and colored marker on paper

Colored marker on paper

Colored crayons on paper

Black ink and graphite on off-white wove paper