https://www.history.com/topics/native-american-history/sacagawea
https://www.ducksters.com/biography/explorers/sacagawea.php
http://www.softschools.com/timelines/sacajawea_timeline/270/
https://www.mrnussbaum.com/sacagawea/
https://www.biography.com/people/sacagawea-9468731
https://www.enchantedlearning.com/explorers/page/s/sacajawea.shtml