Amazon.com : Casio SL-310SV, Sloar Powered Standard Function Calculator : Office Products
Amazon.com : Desktop Calculator Large LCD Display 12 Digit Number Handheld Portable Pocket Basic Calculator with Big Soft Sensitive Button, Battery and Solar Powered, for Office Home School Use(OS-6M) : Office Products
Casio fx-7000G Handheld Electronic Calculator | National Museum of American History
CASIO fx-1000 Scientific Calculator -I believe this one is highly collectible
CASIO fx-1000 Scientific Calculator -I believe this one is highly collectible