Eddie's Math and Calculator Blog: Retro Review: Texas Instruments TI-35 PLUS
Texas Instruments TI-30
File:Vintage Texas Instruments TI-30 Pocket Calculator, Red LED, Made in USA, A Very Widely Used Calculator, Price Was $24.95 in 1976 (8732557514).jpg - Wikimedia Commons
MyCalcDB : Calculator Texas Instruments TI-35 version 2