Archimedes or Euclid, after "The School of Athens" by Raphael

Ink on paper

Red and white chalk on off-white wove paper prepared with beige ground

Watercolor and gouache on off-white antique laid paper

Graphite on white paper

Brush and wash over graphite

Black chalk heightened with white chalk on brown laid paper

Graphite on off-white wove paper

Black chalk, heavily fixed, on dark cream card

Black chalk on buff paper

Ink on paper

Brown ink

Gray wash, white gouache