1966. No edition remarks. 63 pages. No dust jacket. Brown cloth covered boards with gilt. Black and white photographs and diagrams. Pages and binding are presentable with no major defects. Minor issues present such as mild cracking, inscriptions, inserts, light foxing, tanning and thumb marking. Overall a good condition item. Boards have mild shelf wear with light rubbing and corner bumping. Some mild marking and tanning. Gilt lettering remains bright and clear.