Ellis, W.M. Ptolemy of Egypt, 1993 CIP galley (d. 283 [B.C.])
Acad. Am. Encyc., c1989 (Ptolemy I, King of Egypt; Ptolemy Soter); c. 367-283 B.C.; Macedonian general of Alexander the Great; founder of the Ptolemaic dynasty of Egypt)
Encyc. Brit., c1972 v. 18, p. 809 (Ptolemy or Ptolemaios I Soter; 367-283)