From the back cover:
This, our latest SECRET BLUE BOOK with many features added, is the most complete catalog of the kind ever produced. The SECRET BLUE BOOK is but one of THREE CATALOGS of our complete line which covers the entire Indoor and Outdoor Amusement Field, supplying adult games of every description.
In the SECRET BLUE BOOK we list and describe a complete line of Dice, Cards, Trade Stimulators and Counter Games, Table Games suitable for use at public gatherings, Adult Games for the home or private play and Various SPECIAL Games.
Our CLUB AND CASINO EQUIPMENT Catalog, printed...