Image caption on page 102 of the book US National Library of Medicine: "Librarian Patricia Burmeister teaches a library training class, ca. mid-1970s, using a chalkboard as well as emerging technology of the day connected to a television: a dial-up modem and keyboard. Training always has been, and continues to be, an important activity at the National Library of Medicine. Advances in medical science and changes in terminology make it necessary for indexers and reference librarians to engage in continuous learning to be effective in their public service."
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