The Computer History Museum has a number of physical artifacts from the ILLIAC II, III and IV, including a number of the logic modules: metal chassis units that

The Computer History Museum has a number of physical artifacts from the ILLIAC II, III and IV, including a number of the logic modules: metal chassis units that held from 3 to 8 vacuum tubes that performed a single function. http://www.computerhistory.org/collections/search/?s=illiac&t=objects&f=physicalobject http://www.computerhistory.org/collections/search/?s=illiac&...