Untitled (bleed-through from previous page, left page); Untitled (designs for Condor planes with color transfer, right page)

Brown ink and gray wash over graphite on off-white paper

Colored marker on paper

Graphite on tracing paper mounted on antique laid paper, with a framing line in brown ink

Red and black marker on paper

Black marker on paper

Graphite on paper

Graphite on off-white wove paper

Brown watercolor on brown antique laid paper; verso: black chalk, white gouache and traces of green and red watercolor [watercolor probably Van Dyck brown applied with a reed pen]

Colored marker on paper

Pastel on brown paperboard

Black crayon on paper

Colored marker on paper