スミソニアン博物館さんのインスタグラム写真 - (スミソニアン博物館Instagram)「Happy #NationalLibraryWeek from some #shelfie goals. 😍📚 This 1914 view of the stacks in the Smithsonian Institution Building, known as the Castle, is from @smithsonianarchives. Did you know the Smithsonian has included a library since its founding? Today our @silibraries has 21 branches and nearly 3 million items in their collection. You can explore the stacks online at library.si.edu.」4月27日 5時01分