Figure 20 Rim sherds from London-shape “dipt” creamware bowls, Lewis Pottery, 1829–1837. One great challenge in ceramic archaeology is identifying the vessel forms; another, is accepting that this identification is never certain. When all the bits and pieces were washed, numbered, and recorded as to where they were found, they were sorted by glaze, color, texture, thickness—any visual means of grouping them. After these ceramic groups were transported to Cincinnati, Bob Genheimer’s corps of volunteers glued and assembled the hundreds of jigsaw puzzles. Then, aided by Vodrey’s own notes and accounts, by research into contemporary production here and abroad, by visualizing the invisible parts, by guess and by gosh, we reached conclusions—or we did not.