Mark Mattson has collected 22 watermarks.
Black River, ON
Tanya Clark
Charles River, USA
Kathleen Behan
Genesee River, USA
Joel Helfrich
Hague Lake, BC
Forrest Berman-Hatch
James Bay, ON
Joseph Boyden
Kashagawigamog Lake, ON
Michael Adamson
Lake Erie, ON
Sarah Harmer
Lake Huron, ON
Sarah Harmer
Lake Michigan, USA
Sarah Harmer
Lake of Bays, ON
Carolyn Maze
Lake of the Woods, ON
Tzeporah Berman - Camp Onakawana
Lake Ontario, ON
Gord Downie
Lake Ontario, ON
Lawrence Scanlan
Lake Ontario, ON
Nora Osbaldeston
Lake Ontario, ON
Sarah Harmer
Lake Superior, ON
Sarah Harmer
Lake Temagami, ON
Gord Miller
Ottawa River, ON
Catherine McKenna
Shuswap Lake, BC
Shane Fennessey
St. Lawrence River, ON
Ingrid Mattson
St. Lawrence River, ON
Soumayya Aatek
Victoria Harbour, BC
Liesa Norman - Camp Onakawana