Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Detail of waterstop at covered ramp: elevations and section (1/4" = 1'-0" and full size)

Graphite on paper

Graphite on off-white wove paper

Graphite on off-white wove paper

Tempera on purple construction paper

Graphite on off-white wove paper

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Watercolor

Crayon on paper

Charcoal on off-white laid paper

Graphite on paper

Graphite on paper

Graphite on trace paper