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MLA Citation: Royalty Free Photo of 1964 US Stamp Devoted to Honouring Radio Amateurs on the 50th Anniversary of the American Radio Relay League. Stock Photo. iPHOTOS.com, Authentic Creatives, LLC, 15-03-2013, https://iphotos.com/download.php?iid=539293&tl=photos. Accessed 25-09-2024.