Dwight, I ran across your posting about the EC-1. I am afraid I go back to the EC-1 period and used hybrid analog-very early digital computers at North American in the early 60s. I wondered if you knew of a source for a fairly good condition EC-1? I just purchased one and am in the process of getting it to work again. But would like to have a second unit to share parts with, etc. Hope this gets to you. Thanks. Larry Royster.