A record of airplane accidents in the Grand Canyon.
A fellow researcher was on the hunt for records of missing people in the national park system and found a good source at The Morning Report. A website of the National Park Service and the U.S. Department of the Interior. It features listings in the national park system from missing hikers, deaths, or accidents. They are divided up into Field Incident Reports, NPS Morning Reports, and Coalition Reports.
All Federal parks in the NPS can be accessed here: https://npshistory.com/morningreport/
Read the full article here with crash listings:
https://georgebailey.substack.com/p/what-goes-up-comes-down