How well do you know your Dewey? Try this map, perfect for #NationalLibraryWeek🎉 !@nyplmaps ・・・ Dewey decimal map of the United States: a guide to library shelves #NationalLibraryWeek Map by Bertine E. Weston, [New York] : R.R. Bowker, 1936 "This pictorial display indicates products, industries, etc. found among the various states and neighboring waters simple to provide a further guide to the shelves." Thanks, Bertine! #nyplmap #pictorialmaps #deweydecimalsystem #classification #maps