The New York Times has done a good job of covering nation-wide events. Articles available from 1851-2012.
https://search.proquest.com/hnpnewyorktimes/advanced?accountid=7121
NOTE: This database is partially funded by the Academic Library Collection Enhancement Program (ALCEP) through the General Libraries of the University of Texas at Austin.
Search for a short encyclopedia article about your topic. An academic-appropriate alternative to wikipedia!
https://infotrac.galegroup.com/itweb/txshracd2603?db=GVRL
NOTE: This database is funded in its entirety by the Academic Library Collection Enhancement Program (ALCEP) through the General Libraries of the University of Texas at Austin.