This accession consists of 6 official Twitter accounts maintained by the Movement of Life Initiative, the Office of International Relations, the Lemelson Center at
the National Museum of American History, the Center for Folklife and Cultural Heritage, the Freer Gallery of Art and Arthur M. Sackler Gallery, and the Phoebe Waterman Haas
Public Observatory at the National Air and Space Museum. Twitter is a third-party site used for public micro-blogging by SI staff. Each of the accounts was crawled between
October 16, 2017, and July 10, 2018, but may document earlier activity. Due to technical issues, crawls of the accounts may not be complete and some features may not function
as expected. Materials are in electronic format.