Philadelphia: American Philosophical Society, 1973. Hard Cover. Large 4to. Near Fine / Good. Item #049172
Pages crisp and clean, with no owners' marks; binding square and tight; hard cover mildly rubbed at corners and spine ends, otherwise clean and excellent. Jacket has a shallow, open tear at the top front, a red pencil mark at mid-front, some pale spotting and some tanning at the spine, and handling smudges front and back, but is overall sound, now protected in a clear sleeve. 328pp. + 2 fold-out plans and 36 black-and-white plates.