File:Vintage Teal 826 LED Handheld Electronic Calculator, Made in Japan, Original Price - $49.95, Circa 1975 (8715685332).jpg - Wikimedia Commons
File:Vintage Texas Instruments Model SR-50A Handheld LED Electronic Calculator, Made in the USA, Price Was $109.50 in 1975 (8715012843).jpg - Wikimedia Commons
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File:Vintage Sharp LED Pocket Electronic Calculator, Model EL-8005S, Made in Korea, Price Was $13.75 in 1975 (8726283075).jpg - Wikimedia Commons