Father Giambattista Martini Leading the Choir in the Church of Santi Apostoli

Red and white chalk on blue antique laid paper, scored with a stylus

Black and white chalk on blue antique laid paper

Black and white chalk on gray prepared paper

Graphite, heightened with white chalk, on green prepared paper

Red chalk on off-white antique laid paper

Brown ink, gray wash and graphite on cream wove paper

Red chalk with some traces of graphite on off-white antique laid paper

Brown ink, brown and gray wash on cream antique laid paper

Black chalk on cream antique laid paper

Red and white chalk on tan antique laid paper

Brown ink with gray wash over black chalk on off-white antique laid paper

Black and white chalk on gray prepared paper