Tree, from the Background of a Picture by an Early Flemish Master, in the Uffizi Gallery at Florence

Graphite on paper

Black ink on green wove paper

Graphite on paper

Colored crayons on paper

Black chalk with touches of red and white chalk on off-white antique laid paper, laid down on a decorated mount

Mixed media

Black ink on off-white wove paper

Red chalk on cream antique laid paper

Colored marker and black pen on paper

Black ink and gray wash on off-white wove paper

Black chalk and graphite on white wove paper

Red chalk on cream antique laid paper, partial framing lines in brown ink and graphite