Part in a series of 4 Labrador Zag-Zaw puzzle made by Tuck & Sons, London, England in 1930's as part of Sir Wilfred Grenfel's efforts to raise money for a hospital ship to serve residents of Labrador and the Arctic. Plywood, interlocking, cut with 20 figure pieces, many appropriate for the Labrador area. Sir Grenfel's signature (undoubtedly, stamped) appears on the box bottom. Artist: B. Gribble. After years of searching I was able to acquire all 4 in the series, shown here.