100 Puzzles How To Make And Solve Them
& Mathematical Puzzles And Other Brain Twisters
by Anthony S. Filipiak
(left: copyright A. S. Barns and Co. 1942, 8.25" x 5.3", hard cover;
middle: copyright Bell Publishing Co. with A. S. Barns Co. 1942, 8.2"x5.8", hard cover;
right: copyright Bell Publishing Co. with A. S. Barns Co. 1942, 1978 printing, 8.2"x5.8", hard cover;
these two bindings of this book have the same 120 pages,
the second has a jacket - the inside of the covers shown above)
A glimpse into 1940 puzzle technology, including sliding piece puzzles and burrs.