Vintage Texas Instruments TI Programmable 58 Electronic Handheld Calculator, Model TI-58, Made In USA, Introduced In 1977 | Calculator, Vintage, Computer history
Texas Instruments TI-59 magnetic card (1977 - 1983) | Museum of Obsolete Media
MyCalcDB : Calculator Texas Instruments TI Programmable 59 aka TI-59
Lin.ear th.inking: The TI-58/59 programmable calculators
File:Texas Instruments Red LED TI-59 Programmable Personal Calculator with Magnetic Strip for Storing & Reading Programs, Circa 1977 (8487825200).jpg - Wikimedia Commons
Texas Instruments TI-59 Programmable Calculator for sale online | eBay