Albert Schweitzer and his Piano Organ

Brown ink and graphite on brown paper

Graphite on heavy buff card

Watercolor over graphite on off-white wove paper

Black and brown crayon on cream wove paper

Graphite, black ink and gray wash on heavy off-white wove paper

Graphite and red pencil on tan wove paper; verso: graphite on tan wove paper

Watercolor on thin off-white wove paper

Sketchbook with gray cardboard covers, held together by white spiral wire

Watercolor over graphite on off-white wove paper

Black ink, watercolor pencil, and charcoal on cream wove paper

Watercolor and graphite on cream wove paper

Watercolor and black ink on off-white wove paper