1957. No Edition Remarks. 278 pages. No dust jacket. Blue cloth with gilt lettering. US Department of Commerce emblem to front board in gilt. Dept of Commerce Circular 582. Light tanning to otherwise clear pages. Noticeably more prominent to text block edges, pastedowns and free endpapers. Stamp to front pastedown. Some subtle looseness to binding but pages remain attached. Additional graph tipped to rear endpaper. Boards have minor corner bumping and edgewear with mild tanning and scuffing overall. Faint ring marks to front board. Spine has heavier tanning with soft crushing to ends. Lettering remains bright and clear. Book has a slight forward lean.