Emphasis for the second conference on the history of information science systems was on scientific and technical information systems in the period from World War II up through the early 1990s. These proceedings present the papers of historians of science and technology, information scientists, and scientists in other fields on a wide range of topics: informatics in chemistry; biology and medicine; information developments in multinational, industrial, and military settings; biographical studies of pioneering individuals; and the transformation of information systems and formats in the twentieth century.