As a retired pilot and officer of Swedish C-130 F 7 Wing squadron service, his worldwide contacts allowed Olausson to construct a detailed history of every Hercules built, with upwards of 2,350 hulls accounted for. As the Hercules has seen worldwide service in the last fifty years, it pinpoints global hotspots by its use, and Olausson's efforts provide a source for operators' discrete records, from Air America and the CIA in Southeast Asia, up to the covert rendition aircraft of current day. It would appear that Lockheed Martin, the current producer of the C-130, finds the volume a useful reference, as they provide substantial new production information each year. The current edition runs 170 pages, the upper limit of international postal weight rates the author is willing to bear. Olausson's efforts have contributed a valuable resource to the Hercules community.