Day, John, 1522–84, English printer. At his London shop Day designed and made type for himself, but not for sale. His types included musical notes and the first Anglo-Saxon type. He printed the first English book of church music (1560) and the first English edition of John Foxe's Book of Martyrs (1563), though not under that title (see Foxe, John). His edition of Euclid was the first English translation of that work. Day's printer's mark was a rising sun, a sleeper awakening, and the motto, "Arise, for it is Day."
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