Ground Saucer Watch (GSW), a Phoenix, Arizona, organisation, used the Freedom of Information Act (FOIA) to get the U.S. government to release UFO documents. GSW managed to get hold of many important UFO documents through the organisation’s lawsuits against the government. The lawsuits were handled by lawyer Peter Gersten, according to the book, The UFO Cover-Up (written by Lawrence A. Fawcett and Barry J. Greenwood).
The brothers William H. and J. A. Spaulding founded Ground Saucer Watch in 1957.
William H. Spaulding, Co-Founder and Director of Ground Saucer Watch, at the console of the image processing computer with which GSW analysed UFO photographs