Talbot Baines Reed,
A History of the Old English Letter Foundries
“ The marked difference of style and excellence in the typography of certain of the earliest books leads us to accept the theory that two schools of typography existed side by side in the infancy of the art—one a rude school, which, not having the secret of the more perfect appliances of the inventors, cast its letters by some primitive method, probably using moulds of sand or clay, in which the entire type had been moulded. ”
