Harold Koehler is looking at material on a table at the end of a shelf of serials. Image caption on page 46 of the book US National Library of Medicine: "After books had been accessioned, library staff cataloged the materials, adding authors, titles, and subjects, and then describing the books physically, by size, format, and length, so the content of these publications would be known to both staff and researchers, ca. late 1940s."
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