^The 'Death Ray' Rivals. New York Times. 1924-05-29 [2007-07-21]. （原始内容存档于2013-11-09）. The inventors of a 'death ray' multiply every day. To H. Grindell-Matthews and Professor T.F. Wall have been added two other Englishmen, Prior and Raffe, and Grammachikoff, a Russian. Herr Wulle, 'chief of the militarists' in the Reichstag, has informed that body that the Government has a device that will bring down airplanes, stop tank engines, and 'spread a curtain of death.'
^ 3.03.1Denies British Invented 'Death Ray'. E.R. Scott Asserts He and Other Americans Preceded Grindell-Matthews.. New York Times. 1924-09-05. Washington, DC, September 4, 1924 Edwin R. Scott an inventor of San Francisco, today challenged the assertion of Mr. Grindell-Matthews, who sailed for London on the Homeric last week, that the latter was the first to develop a 'death-ray' that would destroy human life and bring down planes at a distance.使用|accessdate=需要含有|url= (帮助)
^Death Stroke. 時代雜誌. August 10, 1925 [2007-07-21]. （原始内容存档于2007-11-02）. Utmost secrecy always shrouds the structural details of new munitions of war. This one, announced last week by its inventor, Dr. Edwin R. Scott, is called the 'death stroke' or 'canned lightning.' The Navy Department, which has been in touch with Dr. Scott's researches, hinted that the ultraviolet ray was involved, but Dr. Scott stated specifically: 'There is no ray or beam about it.'