As a celebration of hundred years of vertical flight, 1907-2007, the author has described the evolution of rotary wing machines, from which helicopters are the result. This book illustrates the five-frame topical philatelic exhibit telling this story in displaying practically all the stamps that have been issued on this subject throughout the world until 2007.
This hard cover book consist of 80 pages in full color printed on letter size (8.5 x 11in.) glossy paper.