HP-65 Calculator with Working Card Writer Reader and Battery, No Charger | eBay
Haul (HP-35, HP-65, HP-41CX) : r/calculators
HP-65 Repair/Restoration (Pictures) :)
1974 HP-65 Calculator playing Lunar Lander Game! - YouTube
HP -65 calculator | Interface
The Hewlett-Packard 65, the first pocket programmable calculator, and it's successor(s), the Hewlett-Packard 67 and Hewlett-Packard 97. : r/calculators
HP-65 - First programmable Pocket Calculator | From HP Virtu… | Flickr