Hewlett-Packard HP-65 Handheld Electronic Calculator | Smithsonian Institution
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Hewlett Packard HP-65 Vintage Scientific Programmable Calculator w/ Cases | eBay
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OLD-COMPUTERS.COM Museum ~ Hewlett Packard HP-65
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Calculator, Programmable, HP-65 | National Air and Space Museum
HP-65 - Wikipedia
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Vintage HP-65 LED Scientific Calculator | eBay
