https://geoscan.nrcan.gc.ca/starweb/nrcanphoto/servlet.starweb?path=nrcanphoto/nrcanphotofastlink_f.web&search1=R=56153
Natural Resources Canada
Sanford, B. V., Covey Hill Formation (Chippewa Bay Member) on Ile Perrot, Quebec., Natural Resources Canada Photo Collection # 2008-080, N/A
Photographie