I recall the SAGE was an integrated system of control for Interceptors. It began in the 1950's and became fully operational with the F106 fighter interceptor aircraft. It could control an entire intercept from wheels up to flare on landing. I never thought I'd SEE a chunk of the system. Thanks! I think it stood for Semi-Automatic Ground Environment, or some such. What kind of cores does it use? I once saw a board of Ruby Rod core memory at a junkyard. Very beautiful. Jeff