Washington: Smithsonian, 1979. First. hardcover. 4 volumes, including the Index. Thick 4to, specially bound in blue leather with marbled endpapers, a.e.g. Washington: Smithsonian Institution, (1979). First edition. A near fine set in the uncommon leather binding -- 2 of the volumes have bookplates indicating that these were presented by the Smithsonian to art historian James Flexner, as recipient of "Archives of American Art Award for Distinguished Contribution to American Art History" near fine.