FIRST ENGLISH EDITION, portrait frontispiece, pp. [xv], 138, 8 (ads), crown 8vo, original red cloth, lettered in blind on the upper board and in gilt on the backstrip, the latter faded with lettering dulled, hint of a bump at bottom corners, textblock edges toned with faint mottled browning to free endpapers, very good. This important translation contains new text written by Einstein specially for it: Appendix III, The Experimental Confirmation of the General Theory of Relativity. (Weil 90/a).