Lead glazed pottery, part first (common clays) : plain glazed, sgraffito and slip-decorated wares (1907)
Barber, Edwin Atlee, 1851-1916, Pennsylvania Museum and School of Industrial Art · Philadelphia : Pennsylvania Museum and School of Industrial Art · leaf 21
5. Sgraffito Dish (13 inches). Germany, Early Nineteenth Century. Museum No. ’03-384. … 6. Sgraffito Jug (12 inches in height). Devonshire, England, 1698.
Pottery
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.