The Gamma Series is the ivory sibling of the Alpha Series, providing artists with a hearty, warm-toned canvas for work that calls for rich, mellow backdrops. These sketch books feature high performance paper that is pH neutral, lignin- and chloride-free and milled from pulp with an alpha cellulose content that exceeds 87%. The heavy-weight 100 lb. paper has a toothy, ivory vellum surface with superb erasure characteristics and is suitable for all dry media. With both internal and surface sizing, it will accept light washes as well. Features 150gsm heavyweight paper with an ivory shade and medium grain surface. Perfect for dry media, light wash, ink, and combining techniques.