If you aren’t familiar with the U. S. National Archives and Records Administration (NARA) genealogy section, https://www.archives.gov/research/alic/reference/genealogy.html, it’s worth a look if you are looking for people who might be in it.
It’s broken down into several sections:
There’s a wealth of genealogical and historical information in the links. Some of the sites you may be familiar with. Others may be new to you. You can also sign for the National Archives Catalog newsletter as the pop-up is persistent. The links includes some pay sites like Ancestry, and free sites like FamilySearch. Using one of the links provided, I thought I found an uncle’s obituary, but turned out to be a person with a similar name who died a few weeks before my uncle.