5 (271) · $ 22.50 · In stock
This paper sheet gives “simplified instructions” for using an adder called the Magic Brain Calculator for addition, description, multiplication, and as an aid in division. It was received with adder 1987.0575.01.Currently not on view
National Museum of African American History and Culture - African
Review: The Smithsonian African American Museum Is Here at Last
Smithsonian National Museum of American History Renovation – SOM
National Museum of African American History and Culture Is
Smithsonian National Museum of American History - Cinnabar
Smithsonian National Museum of American History
National Museum of American History in Washington DC - Discover
Historians and History Museums, Perspectives on History
The Smithsonian National Museum of American History's New Exhibits
Smithsonian's National Museum of American History - Clio
Smithsonian National Museum of American History – Adventures of