Iconography of Christian art 
Schiller, Gertrud.
Seligman, Janet.
London Lund Humphries,
1971
In 2 vols
'Translated from the 2nd German ed. of "Ikonographie der christlichen Kunst". Gütersloh: Gütersloher Verlagshaus Gerd Mohn, 1969
bibl p467-470
Christian art and symbolism.