This book was compiled for those who find enjoyment, entertainment and relief from worry in solving mechanical and manipulative puzzles and for the recreational leader who uses puzzles as a leisure time activity. A few can be purchased—but by including such information the title of the book would be misleading; and furthermore it's more fun to make than buy them.
The puzzles in this book are arranged in units of ten and in order of difficulty so that they may be used as a progressive form or type of entertainment. Each one of the hundred puzzles has been used on playgrounds, in summer camps, clubs and in other kindred activities throughout the United States. Although they are about a tenth part of the author's collection yet this book presents a recreational product that has been tried and tested by public use.
This book is a facsimile reprint and may contain imperfections such as marks, notations, marginalia and flawed pages.