Building Addition and Alterations, Philadelphia, 1944-1946: Elevation and typical wall section (1/8" and 3/4" =1'-0")

Watercolor, masking tape and graphite on off-white wove paper

Graphite on paper

Graphite on cream wove paper

Watercolor over graphite on off-white illustration board

Charcoal and black ink on cream laid paper

Watercolor on off-white wove paper

Graphite on off-white wove paper

Graphite and white chalk on gray laid paper

Graphite and marker on graph paper

Black ink and graphite on thin buff wove paper

Watercolor on off-white wove paper

Graphite on off-white wove paper