Parker, Martin. A memoriall of those two French princes, Valentine and Orson, sons of the high and mighty Alexander, the Grecian emperour : with the manner of their strange births, education, and marvelous adventures (London : Printed for Tho. Vere at the signe of the Angel without Newgate, 1657)
Beinecke Library 1993 668. Located by Sarah Lindenbaum.