Studies from Gropius' Berlin Office: Basement plan, 1:50

Green and black crayon on paper

Colored crayon on paper

Black marker on paper

Colored marker on paper

Black and red marker and black pen on paper

Graphite on paper ; blue crayon on paper

Black crayon on paper, mounted

Colored crayon on off-white laid paper

Graphite on paper

Ink on paper

Colored marker and black pen on paper

Colored marker and black pen on paper