Reverse reads: "Code - F80; Class. - Industry; Ident. - Firing Kilns." This photograph shows a man shoveling coal into a firing kiln. This is most likely Weller Pottery. S.A. Weller Pottery located at 1888 Ceramic Avenue, was generally considered to be the largest art pottery in the world, with 400,000 square feet of floor space, manufacturing all kinds of decorative art ware. Founded in 1872 by Samuel A. Weller (1851- 1925), initially in Fultenham, Ohio, he moved production to Zanesville in 1888 and built his first factory in 1890. The company handled all aspects if production, from digging the clay all the way through the firing in the kiln. At first, Weller produced everyday items such as cookware and flower pots, but in 1895 the c...