Untitled (blank with graphite transfer, left page); Untitled (designs for Condor planes, right page)

Colored marker on paper

Watercolor and gouache on cream wove paper, mounted to woodpulp board

Colored marker on paper

Black ink and gray wash over graphite, with purple-gray crayon and a touch of yellow gouache on off-white wove paper

Graphite and red colored pencil on cream wove paper

Purple chalk on cream modern laid paper

Charcoal on modern laid paper

Pastel on cardboard

Black ink, gray wash and white gouache on faded blue antique laid paper, laid down overall on cream antique laid paper

Brown ink and brown wash on cream antique laid paper with traces of black chalk; verso: black chalk

Graphite, black chalk, oil pastel(?), brown ink, watercolor, and gouache on tan laid paper

Graphite, gray wash, watercolor, and black chalk on cream antique laid paper