Rockwell family (Monotype Imaging library) contains 24 fonts.
The first geometric slabserif, Litho Antique, appears as a sport from the Inland Typefoundry of St. Louis in 1910, distributed from Inland and then ATF. The 1933 Monotype updating of Litho Antique was supervised by F.H. Pierpont from Connecticut. Rockwell was prepared as a competitor to Memphis, but Pierpont ignored the detailing of the contemporary European slabserifs in favor of the earlier American model.