If you're interested in hypertext and new media, Emanuel Goldberg (1881-1970) is a name you are going to be hearing a lot about. Michael Buckland has just published a biography of this now-obscure German industrial leader that seems bound to rewrite the prehistory of hypertext.
Bush's Microfilm Rapid Selector may not have been plagiarism. Goldberg's English and German papers on the Statistical Macghine had been prominently published, and reference to it and to the microfilm rapid selector of Merle C. Gould can be found in documents that were known to have been distributed to Bush in 1938. However, Bush might not have read them or might not have recognized them for what they were.