40-Year Collection of Calculators - $40 (Leon, Iowa)

A variety of calculators that have been popular before we got smartphones with calculators built-in.
Several different brands, even one with an AC power cord and prints out on thermal paper (or at least it used to).
Several with original boxes.
A history of calculating, for the extremely low price of $40.
I make frequent trips to the Des Moines area and can make arrangements to meet in some convenient location for the sale.