Reliable sources for research:

• KYVL: http://www.kyvl.org 

• Library of Congress: https://www.loc.gov/ 

• The Interior-Journal: https://www.theinteriorjournal.com 

• Digital Public Library of America: https://dp.la/ 

• PBS News Hour: https://www.pbs.org/newshour/extra/ 

• Science News:  http://www.sciencenewsforstudents.org/ 

• Smithsonian's History Explorer: https://historyexplorer.si.edu/