Set of three randomly selected antique 1920's "Little Blue Books". Each blue book tackles a unique subject matter in the form of a small 3.25" x 5" digest book usually consisting of about 30 to 60 pages. Titles vary in nature and include subject matters such as, "How to Argue Logically", "French Self-Taught", "Curiosities of Mathematics", "The Enjoyment of Reading", "Great Men of Science", "Common Faults in Writing English" and "How to Make Money in Wall Street". Price reflects set of 3 randomly selected books. All books are in readable condition, but do show wear due to age. And although not apparent, the covers were indeed originally "blue".