Frank Residence, Pittsburgh, Pennsylvania, 1939-1940: Pipe railing details (1/4" , 1/2" = 1'-0" and full size)

Black ink on off-white wove paper

Graphite on dark cream wove paper

Pastel on brown paperboard

Watercolor and white gouache over graphite on off-white wove paper

Graphite and colored pencil on paper

Graphite with scratchwork on glossy off-white wove paper, mounted on board

Black ink, gray wash, black crayon and graphite on off-white laid paper

Graphite on off-white laid paper

Graphite and stumping on white wove paper

Black ink on off-white wove paper

Graphite on cream wove paper

Hammered marks on blue transfer paper