Georgia O'Keeffe. Evening Star VI. 1917.8 7/8" x 12".

Auguste Rodin. Cambodian Dancer. 1906.11 3/4" x 7 7/8".

Leonardo da Vinci. Three Seated Figures and Studies of Machinery. c. 1490.

Guillermo del Toro. Sketchbook. 2006.

Elizabeth Layton. The Eyes of the Law. 1985.

Vincent van Gogh. Carpenter. c. 1880.22" x 15".

Vincent van Gogh. Old Man with His Head in His Hands. 1882.19 11/16" x 12 3/16".

Vincent van Gogh. Self Portrait with Gray Hat. 1887.17 1/4" x 14 3/4".

Michelangelo Buonarotti. Studies for Libyan Sibyl on the Sistine Chapel ceiling. c. 1510.

11 3/8" x 8 7/16".

Pablo Picasso. Guernica, first composition study. May 1, 1937.8 1/4" x 10 5/8".

Pablo Picasso. Guernica, composition study. May 9, 1937.9 1/2" x 17 7/8".

Pablo Picasso. Guernica. 1937.11' 5 1/2" x 25' 5 1/4".

Drawing Tools and Their Characteristic Lines.

Types of Hatching: Hatching.

Types of Hatching: Cross-hatching.

Types of Hatching: Contour hatching.

Charles White. Preacher. 1952.21 3/8" x 29 3/8".

Judith Murray. Obsidian. 1988.17 1/2" x 19 1/4".

Georgia O'Keeffe. Banana Flower. 1933.21 3/4" x 14 3/4".

Georges Seurat. L'Echo, study for Une Baignade, Asnieres. 1882–1891.12 15/16" x 9 7/16".

Rosalba Carriera. Portrait of a Girl with a Bussolà. 1725–1730.13 3/8" x 10 1/2".

Edgar Degas. Le Petit Dejeuner Apres le Bain. c. 1894.39 1/4" x 23 1/2".

Vincent van Gogh. The Fountain in the Hospital Garden. 1889.18 7/8" x 17 3/4".

Gary Panter. Back to Nature. 2001.5" x 3 1/4".

Gilbert Hernandez. Fear of Comics (cover). 2000.

Marjane Satrapi. Page from Persepolis. 2001.

Julie Mehretu. Back to Gondwanaland. 2000.8' x 10'.

Christine Hiebert. Untitled. 2004.Length 36' 7“, wall height 11’ 6”.

Barry McGee. Untitled. 2006. 10 3/4" x 8 3/4".