  In recent years, journalists and other researchers have used web archives as
an important resource for their study of disinformation. This paper provides
several examples of this use and also brings together some of the work that the
Old Dominion University Web Science and Digital Libraries (WS-DL) research
group has done in this area. We will show how web archives have been used to
investigate changes to webpages, study archived social media including deleted
content, and study known disinformation that has been archived.
