Many thanks to SWLing Post contributor, @experimradio, who notes:
Experimental Radio Service license renewed 1 March 2018 for this HF station.
Good luck extracting useful intelligence from this:
https://apps.fcc.gov/els/GetAtt.html?id=170747&x=.
Copy of license:
Thank you for the tip! You’re right–vast portions of this documentation have been marked out.