People who are interested in GLO heraldry might want to be on the lookout for an old used copy of Emily Butterfield's
College Fraternity Heraldry.
It includes heraldic descriptions of GLO armorial bearings, black and white pictures (like line drawings), discussion / definition of terms, and on and on. It also mentions and sometimes briefly describes "coats of arms," "crests," whatever you want to call them, that aren't, strictly speaking, correct by heraldic standards.
The book (a paperback, at least the one I have) obviously is not up-to-date -- it was published in the 1930s, I think -- but is still interesting.
And yes, this is THE Emily Butterfield who was, among many other things, one of the founders of Alpha Gamma Delta.
See Michigan Women's Hall of Fame entry at (gasp):
http://hall.michiganwomenshalloffame...95~216~166~187