26. Hammich, Williamina A., Garfield, Eugene, Field, Helen G., Whittock, John, Larkey, Sanford. "Final Report on Machine Methods for Information Searching", Welch Medical Library Indexing Project, Johns Hopkins University, Baltimore, Maryland (Sponsored by the Armed Forces Medical Library), p. 1-38, 1955

26. Hammich, Williamina A., Garfield, Eugene, Field, Helen G., Whittock, John, Larkey, Sanford. "Final Report on Machine Methods for Information Searching", Welch Medical Library Indexing Project, Johns Hopkins University, Baltimore, Maryland (Sponsored by the Armed Forces Medical Library), p. 1-38, 1955, Box: 89, Folder: 39. Eugene Garfield Papers, 2009-036. Science History Institute Archives. https://sciencehistory.libraryhost.com/repositories/3/archival_objects/20801 Accessed November 28, 2024.