Paper Factory Building, Alfeld-Gronau, 1923-1924: Elevation from courtyard

Graphite on paper

Ink and colored crayons ; colored crayons on paper

Black crayon on paper and mounted

Black marker on paper

Graphite on paper

Colored marker on paper

Colored marker and black pen on paper

Black marker on paper

Black crayon on paper

Graphite and colored crayon on paper

Graphite on paper and mounted

Ink, graphite, and colored pencil on paper