Left: Detail from "STORIES in STONE" by Martial Rose & Julia Hedgecoe. Herbert Press, ISBN 0-7136-5725-1
An excellent book illustrating the huge number of carved bosses decorating the Norwich Cathedral vaulting.
Right: Detail from David Owner's fascinating and well illustrated webpages on the history, origins and locations of Norfolk's incarnations of "The Green Man"
St. Peter's, Weasenham, Norfolk
And on a similar theme, don't miss the fine collection of grotesques on Paul Gambling's "Norfolk Church Gargoyles"
Be sure to follow up the various excellent links listed on the above websites.