This drawing was done from a beautiful book of black & white photographs of the Pieta', by Robert Hupka, who had the unique opportunity of photographing the work while it was being prepared for transit to the Worlds Fair in New York, in 1964-65.
Botticelli's Three Graces
Vermeer's, Girl with a Pearl Earring
Vermeer's, Story of Painting
Leonardo's, Virgin w/ Saint Anne & Child
Variation on Leonardo's Virgin of the Rocks
Michelangelo's, Adam/ Sistine ceiling
King Rama IX