The LA Times ran an obituary this week on Samuel T. Cohen the developer/inventor of the neutron bomb. He is said to have used only a pencil, paper and his slide rule for that invention. The picture on the front page shows Cohen holding a peace medal and his slide rule. His father gave him a slide rule for his 15th birthday which would have been in 1936. The rule appears to be a K&E which would fit the date.

Marion Moon