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 41
18. Signed Sgraffito Pie Plate (11% inches). A Horse Race. By David Spinner, about 1800. 19. Sgraffito Pie Plate (11% inches). Continental Soldiers. By David Spinner, about 1800. Museum No. ’00-199.
Pottery
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.