Lewis, Wilmarth. Collector's Progress. New York: Alfred A. Knopf, 1951. First Edition. 
Publisher's maroon cloth spine with pink & white patterned boards, 5 3/4 x 8 1/2 inches, private bookplate, xix., 253, xiii. clean pp. Illustrated; stated first edition. Dust jacket with some edge-wear, pill-sized chip at the center of the spine panel, now in a clear wrapper. Very good in good dust-jacket. Hardcover.
"The collector's own story of the formation of the world's greatest collection of books and manuscripts by and about Horace Walpole, Strawberry Hill, and the Strawberry Hill Press." - publisher.