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 49
24. Sgraffito Pie Plate (8V^ inches). Made by Friedrich Hildebrand, c. 1830. … 25. Sgraffito Jar. Showing Peacock Motive. National Museum, Washington, About 1825.
Pottery
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.