The first calculator I ever owned was a Berkey (actually Keystone Berkey) scientific calculator from the 1970s. I am looking to buy one as a reminder of days gone by. Does anyone know of a good web site where something like this might be found? Or does anyone have one they would like to sell? I would appreciate any help.
Ken Goldberg Math Education New York University email@example.com_ (mailto:firstname.lastname@example.org)