Euclid

Brown ink, brown wash over black chalk, traces of red chalk, heightened with white gouache, on cream antique laid paper

Brown ink, incised, on cream antique laid paper inlaid into off-white antique laid album page; verso: brown ink, incised, off-white antique laid album page also incised

Brown ink, incised, on cream antique laid paper inlaid into off-white antique laid album page; verso: brown ink and graphite, incised, off-white antique laid album page also incised

Red chalk on off-white antique laid paper

Oil paint on antique laid paper, varnished

Black and white chalk on blue antique laid paper

Black chalk , with touches of white gouache, on dark cream antique laid paper, mounted overall to cream antique laid paper hinged to decorative mount.

Black chalk on gray-blue antique laid paper

Brown ink, brown wash, over graphite, on cream antique laid paper

Brown ink and red chalk and touches of brown wash on off-white antique laid paper, mounted at top to cream antique laid paper mount

Brown ink and gray wash on tan antique laid paper

Brown ink, brown wash and black chalk on cream antique laid paper, squared in black chalk