Black and white image of a Williams Memory Tube Display which consists of the Williams tube and its associated circuitry.
Verso paper sticker: "The Williams tube was the most reliable random access primary memory prior to the invention of the coincident current core memory by Jay Forrestrer. Professor David Edwards of Manchester remembers that after Forrester lectured at the University on the use of core memory, Sir Frederick Williams noted that it would never be practical because the cores had to be manufactured one at a time , while each Williams tuve was capable of handling up to 1024 bits." Verso: "Catalog" "Williams Tube Brochure" "64%"