Documents in this series trace the technological history of electronic data processing at Sperry Rand From the 1950s to the mid 1970s, as they describe the development of five generations of computers. The archive traces the evolving relationship between hardware and software. It shows that the earliest programs for the ENIAC were done in a machine language that mirrored the physical construction of the computer. With the introduction of stored programs, full computer languages such as COBOL were developed. The records document the development of the UNIVAC algebraic short language code by Grace Hopper in the early 1950s. Software publications files trace innovations in UNIVAC software from 1958 to 1970 and show how software engineers sought to maximize hardware potential.