Buckland, M. (1992). Emanuel Goldberg, Electronic Document Retrieval, And Vannevar Bush's Memex. http://www.sims.berkeley.edu/~buckland/goldbush.html.

Buckland investigates the historical context surrounding Vannevar Bush's article, "As We May Think" [bush_think] to determine that it was not as revolutionary as it appears today. "The Memex was based on Bush's work during 1938-1940 developing an improved photoelectric microfilm selector, an electronic retrieval technology pioneered by Emanuel Goldberg of Zeiss Ikon, Dresden, in the 1920s. Visionary statements by Paul Otlet (1934) and Walter Schuermeyer (1935) and the development of electronic document retrieval technology before Bush are examined."