Stillman Birn Archival Sketchbooks - 10 times; 7, Gamma Series Sketchbook, 50 Pages
Available in both hardbound and wirebound formats, these sketchbooks contain multiple sheets of 100 lb (150 gsm), ivory paper with a vellum surface and a distinctive tooth. Ideal for dry media and light washes, the paper is both internally sized and surface-sized . The hardbound sketchbooks contain 62 sheets (124 pages) of paper. The wirebound sketchbooks contain 50 sheets (100 pages) of paper.