Eddie's Math and Calculator Blog: Retro Review: Casio fx-7500g
Casio fx-7500G - Folding graphing calculator from 1988 - YouTube
Got ahold of a Casio fx-991ex and CG-50 to match my Classpad II. I'm really impressed with them but there is something about the fx-991ex... (see comments) : r/calculators
Casio graphic calculators - Wikipedia
MyCalcDB : Calculator Casio fx-7500G aka GRAPHICS
Eddie's Math and Calculator Blog: Retro Review: Casio fx-7500g