Pendentive, Central Bay of the Loggia, Villa Madama, Rome

Graphite on heavy off-white wove paper

Graphite on off-white wove paper

Black conté crayon on ivory tracing paper

Red crayon on thin tan laid paper

Charcoal on off-white laid paper

Gray pastel with incised lines on white wove paper

Crayon on paper

Charcoal on off-white laid paper

Graphite on paper

Black ink on tan wove paper mounted on buff card

Charcoal on off-white laid paper

Colored crayons ; black crayon on paper