Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Interior casework details, study - room #117: elevations, isometric, and sections (1 1/2" and 6" = 1'-0")

Black and white chalk on brown wove paper

Colored inks and graphite on gray/white handmade paper

Graphite on off-white wove paper

Graphite on paper

Brown ink on buff wove paper

Black crayon on paper

Graphite on off-white wove paper

Sketchbook with beige cloth-covered cardboard covers

Watercolor over graphite on off-white wove paper

Graphite and red pencil on off-white modern laid paper

Graphite on off-white wove paper

Graphite on off-white wove paper