This primary source comes from the 30.
National Archives Identifier:
513326Full Citation: 'The Boston Massacre'; 3/5/1770 (artwork ca. 1868); Historical Photograph Files, 1896 - 1963; 30, Record Group Records of the Bureau of Public Roads; National Archives at College Park, College Park, MD. [Online Version, https://www.docsteach.org/documents/document/the-boston-massacre-chappel, April 19, 2024]