Book Description: E. & F.N. Spon, London., England, 1919. Hardcover. Book Condition: Good +. 1919 Good+/No Dj. Blue cloth is stained, frayed with worn/bumped corners. End-papers have age-darkened and ffep has a publisher ad label. On ffep a PO bookplate ("Library of Southern Bell Telephone and Telegraph Co..) At least eighteen fold-out dia gram pages, all in very good condition, plus many drawings and photographs. 186 pps plus 40 pages of ads at rear. Bookseller Inventory # 12529