I had one reader email me and ask me where do I get some of the stuff that I find on Ernest Hemingway, usually it is online or I do something like go to the Hemingway Museum and Home to gather facts and so I can see how others are officially (physically) presenting the nature of the writer. I usually would go with sites or organizations like the national endowment of the humanities, (neh.com) because they are the official organization headed by our beloved government to handle the categories which Hemingway’s work would fall under.
I also like people who blog about the subject matter, usually you can find tidbits that are not found the major sites but can be collaborated elsewhere and give you fun facts about Hemingway which may be useful if doing a school report or if you are heading out with a group to the Hemingway museum.
These are some interesting websites about Hemingway that touch upon things OUTSIDE of Oak Park, IL the great village that exploits his name every time they get:
Fun facts about Hemingway: https://letterpile.com/writing/Ernest-Hemingway-An-American-Literary-Great
Hemingway in Dry Tortugas: https://www.drytortugas.com/ernest-hemingway