20080308_Researcher_600 Published October 18, 2018 at 600 × 600 in 20080308_Researcher_600 ← Previous / Next → A researcher at The National Archives in D.C. studying past works. I believe that one of the main avenues of study is by using resources like a local library. https://commons.wikimedia.org/wiki/File:A_researcher_at_The_National_Archives.jpg