Borromini's San Carlo a la Quatro Fontane, Rome

Black ink, gray wash, and white gouache on blue wove paper

Graphite, watercolor, and white gouache on beige wove paper, darkened to brown

Watercolor, black ink, and graphite on off-white wove paper

Graphite and black crayon

Black and brown ink on cream antique laid paper

Black and gray ink and red and green watercolor on cream wove paper

Graphite on heavy cream wove paper

Watercolor over graphite on white wove paper

Watercolor and gouache over graphite on gray wove paper

Graphite on cream wove paper

Gray ink and graphite on cream wove paper