Building Addition and Alterations, Philadelphia, 1944-1946: Scheme 3: floor plans and section (1/32" = 1'-0")

Graphite on paper

Black and blue crayon on paper

Gouache over graphite on off-white wove paper

Graphite on off-white wove paper

Graphite on paper

Charcoal and graphite on off-white wove paper

Black ink on ivory laid paper

Charcoal on off-white wove paper

Graphite on ruled notebook paper, mounted on heavy card

Graphite on off-white wove paper

Watercolor on thin off-white wove paper

Graphite on paper