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 65
31. Slip-Decorated Shaving Basin (8 inches). Eastern Pennsylvania, c. 1750. Museum No. ’03-368. 32. Slip-Decorated Dish (17}^ inches). Eastern Pennsylvania, 1769. Museum No. ’93-190.
Pottery
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.