Colorado Yule marble : building stone of the Lincoln Memorial - McGee, E. S.; United States Geological Survey (Washington, D.C. : U.S. Governmeny Printing Office, 1999)
Includes bibliographical references (p. 36-38)
Keywords: Lincoln, Abraham, -- 1809-1865 -- Monuments -- Washington (D.C); Marble -- Washington (D.C.) -- Deterioration; Lincoln Memorial (Washington, D.C.) -- Inspection; Marble -- Colorado