Selections from Thomas Mellon and his times : first printed in Pittsburgh, Pennsylvania in 1885 by Judge Thomas Mellon "for his family and descendents exclusively"
1968
3
Yonge, Ena L., 1895–
A catalogue of early globes, made prior to 1850 and conserved in the United States;
1968
4
The National union catalog, pre-1956 imprints;
1968-81
5
National Gallery of Art: J.M.W. Turner: A Selection of Paintings from the Collection of Mr. and Mrs. Paul Mellon,October 31, 1968 - April 21, 1969, by John Walker and Ross Watson: exhibition catalogue