Historiography
1960s
In the 1960s, when the field of Computer Science was emerging, some practitioners wrote encyclopedic histories and organized individual programming languages chronologically. Representative works from this period include Saul Rosen’s Programming Systems and Languages (McGraw-Hill, 1967) and Jean E. Sammet’s Programming Languages: History and Fundamentals (Prentice Hall, 1969). The latter comprehensively describes the technical aspects of the development of 116 programming languages up to the mid-1960s. This work was one of the reasons for the large number of historical studies of programming languages in later years.