CCCC MS 59 Collected essays on Prester John, including reprints of Zarnke’s 1879 and 1883 works on the Epistola Manueli Comneno imperatori Graecorum as found in CCCC MS 59, passim.
CCCC MS 66A Collected essays on Prester John, including reprints of Zarnke’s 1879 and 1883 works on the Epistola Manueli Comneno imperatori Graecorum as found in CCCC MS 66A, passim.