Friedrich Frobel House, Bad Liebenstein, 1924: Pavilion: plan, elevations, and section, 1:100

Ink and watercolor with graphite color notations on paper

Charcoal on paper

Black crayon on paper

Graphite on cream wove paper

Black ink on off-white modern laid paper

Graphite on paper

Mixed media

Charcoal on paper

Graphite and crayon on paper

Watercolor, silver paint, graphite, and gouache on cream wove paper

Graphite on off-white wove paper

Black marker on paper