A HISTORY OF THE CLASSICAL ISOPERIMETRIC INEQUALITY
Thomas I. Porter
CONTRIBUTIONS TO THE CALCULUS OF VARIATIONS, 1931-1932
G. A. Bliss and L. M. Graves, eds.
UNIVERSITY OF CHICAGO PRESS
High Quality Photocrom Print Depiction of the Byrsa Hill, Carthage, Tunisia, circa 1899. The full collection of 41 of these is available on the Library of Congress website.