<i>Modifications of the Beaver hat</i>, illustration of eight different styles of beaver hats :
Londres, E. Stanford
1892
Castorologia, Or, The History and Traditions of the Canadian Beaver: An Exhaustive Monograph…, Horace T. Martin, Montréal, W. Drysdale; Londres, E. Stanford, 1892.<br>Bibliothèque nationale du Canada <a rel="nofollow" class="external autonumber" href="http://www.collectionscanada.ca/explorateurs/h24-150.15-f.html">[1]</a>