Roger Duhamel/Queen’s Printer, Ottawa, 1961.  Stapled soft cover, 35 pages.  Wraps show edge and cover wear, some rubs, creases and soil.  All pages secure; a bit of rust on staples.  Interior clean and unmarked; black & white illustrations, tables and multi-fold out drawing affixed to inner rear wrap.  ‘The shelter described in this booklet, although not affording protection against the blast of a nuclear explosion or the fires that may result, will provide good protection against the more wide-spread radiation danger.’ (from Foreword by Rt. Hon. John G. Diefenbaker, Prime Minister)