Untitled (notes and date, left page); Untitled (adhered b/w photocopies of "Davy-Lampe" and design for mining lamp with sketch design of mining lamp sculpture, right page)

Colored marker on paper

Black pen and black and red marker on paper

Graphite on paper

Graphite with crayon on paper

Black crayon on paper

Graphite on paper

Colored crayons on paper

Black ink on white laid paper

Graphite on paper

Graphite on paper

Graphite and colored pencil on paper

Ink on paper