#   [1] Joyce Whalley "The Art of Calligraphy -- Western Europe and America"
#   Bloomsbury Books, London 1980
#
#   [2] Manuscript Palat. Lat. 1369. Cited in [3].
#
#   [3] Fritz Saxl, book about astronomical and astrological images in medieval 
#   manuscripts.
#
#   [4] Erwin Panofsky, in a letter to W. F. Friedman, 19 March 1954,
#   now in Marshall Library.
#
# Last edited on DATE TIME by USER
