The Admiralty List Of Wireless Signals. Volume 1 Hydrographic Department, Admiralty
1937. 486 pages. No dust jacket. Blue pictorial boards with black lettering. Vol. I. Pages are lightly tanned and thumbed at the edges, with creased corners and foxing. Binding has remained firm. Boards are a little rub worn, slight shelf wear to corners, spine and edges. Corners are a little bumped. Spine ends are mildly crushed. Light tanning to spine and edges.