Building Stones of the United States: the NIST Stone Test Wall The stone test wall was constructed to study the performance of stone subjected to weathering. It contains 2352 individual samples of stone, of which 2032 are domestic stone from 47 states.
Canadian Landscapes A searchable collection of photographs of landforms from Canada. Excellent resource.
Journal of Glacial Geology and GeomorphologyGlacial Geology and Geomorphology is an electronic journal of The British Geomorphological Research Group developed by The Queen's University of Belfast and published by John Wiley & Sons, Ltd.