Harley-Davidson: American Freedom Machines explores Harley-Davidson's fascinating history. 70 Harleys profiled, illustrated with photography and informative text. Hardcover 320 pages Scholars have estimated that roughly 300 motorcycle manufactures set out their shingles across the U.S. in the early in the early part of this century. By 1954, the exact figure was much easier to pin down: There was just one. Why Harley-Davidson survived when others failed is a story these pages can only begin to reveal.