Shippen, Katherine Binney, 1892- Portals to the past; : the story of archaeology. [electronic resource] / Illustrated by Mel Silverman.. — New York, : Viking Press, [1963]. — 255 p. : illus. 22 cm. LCCN: 63008851 Subjects--Topical Terms: Archaeology--History. LC Class. No.: CC165 / .S45 Dewey Class. No.: 913