Relativity, the Special & the General Theory. A Popular Exposition. Authorised Translation by Robert W. Lawson. With Five Diagrams and a Portrait of the Author.

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