About Matthew Co Kathleen Corrigan Books by Matthew Co Kathleen Corrigan Great Lakes-St. Lawrence Lowlands by (author) Matthew Co Kathleen Corrigan Ages 9 to 11 Grades 4 to 6 Canadian Shield by (author) Matthew Co Kathleen Corrigan Ages 9 to 11 Grades 4 to 6 Hudson Bay Lowlands by (author) Matthew Co Kathleen Corrigan Ages 9 to 11 Grades 4 to 6 Interior Plains by (author) Matthew Co Kathleen Corrigan Ages 9 to 11 Grades 4 to 6 Arctic Lands by (author) Matthew Co Kathleen Corrigan Ages 9 to 11 Grades 4 to 6 Appalachian Uplands by (author) Matthew Co Kathleen Corrigan Ages 9 to 11 Grades 4 to 6 Cordillera by (author) Matthew Co Kathleen Corrigan Ages 9 to 11 Grades 4 to 6