Pt.5) Durability and Condition of the Stone: Building Stone of the Lincoln Memorial, by Elaine S. McGee
Pt.4) Selection of Yule Marble for the Lincoln Memorial: Building Stone of the Lincoln Memorial, by Elaine S. McGee
Pt.2) Quality, Grade, Mineralogic and Physical Characteristics of the Marble: Building Stone of the Lincoln Memorial, by Elaine S. McGee