A new addition to the collection, but missing the documentation... a 'Calculo Analog Computer Kit' from 'The Science Materials Center: a division of the Library of Science' in New York. The box indicates that the unit was copyrighted in 1959. Made up of a couple of lever switches, three potentiometers, a meter, and a pair of flashlight batterys. Looks like the docs probably detailed assembly notes, principles of operation, and expirements. Anyone familiar with this critter, and perhaps have a copy of the manuals for it? (pictures soon) -jim --- jimw(a)agora.rdrop.com The Computer Garage - http://www.rdrop.com/~jimw Computer Garage Fax - (503) 646-0174