of these containing 99 photographs arranged in a 3 by 33 grid. In total, each document store contained images of 990,000 documents, and up to 100 document stores could be used in a single Walnut system, for a total storage of 99,000,000 pages. A separate system was used to access pages from the Walnut system. Users would look up keywords stored on an IBM 1405 hard disk system, identifying individual documents to be retrieved. The machine produced punched cards that were inserted into the Walnut. The Walnut system retrieved the documents, copied them onto a film strip and developed it, and then inserted four such images into an aperture card. The card could be read directly on a microfilm reader, or used as negatives for full-sized printouts. Cypress When Walnut was successfully delivered in 1961, the San Jose lab turned its attention to commercializing the system under the project name "Cypress". A direct analog of Walnut for document storage became the 1350 Photo Image Retrieval System, while the same basic system adapted to storing computer data became the 1360 Photo-Digital Storage System. Both systems used the same photographic cards and automated film development system originally developed for Walnut, but replaced the diazo film with longer-lasting conventional silver halide films. The system used pneumatics to move the film cards between the more complex developer system, the reader/copier, and a much larger store. Jack Harker was the Program Manager for the development and delivery of the systems. At about the same time, the Atomic Energy Commission started looking for a system able to store 1 terabit for online access by supercomputers running simulations. IBM's Thomas J. Watson Research Center proposed a new version of the 10 inch optical disk they had developed for the AN/GSQ-16 (Mark II) Russian-to-English machine translation system. San Jose instead proposed a Cypress system for the same role. Cypress won the contest, and a $2.1 million () contract was awarded for two machines, one for the Lawrence Livermore National Laboratory and the other for the Lawrence Berkeley National Laboratory. The former was delivered in September 1967 and the latter in March 1968. Three more systems were eventually delivered, two for the National Security Agency and another for Los Alamos National Laboratory. These would be the only Cypress systems delivered. By the time they were in place, IBM had developed a number of other storage systems of similar size,