Warm-toned, heavy-weight paper has an ivory medium grain surface that is suitable for all dry media and ink, as well as light washes. The wirebound hardcovers are made with extra heavy-weight binders' board that is tough and resistant to warping. The paper contains both internal and surface sizing, is pH neutral, lignin and chloride-free, and 150 gsm thick.
Each book contains 50 sheets. Gamma Series, by Stillman & Birn.