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 6
Sgraffito Pie Plate (12 inches). The “ Mischianza.” Southeastern Pennsylvania, 1786. Museum No. ’00-20.
Pottery
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.