If you’re looking for something that you cannot find in any search engines, specially Google, you can find it at the Library of Congress, of loc.gov. It’s a government owned website and it’s frequently updated about the latest additions in the library.
You can access digital collection at loc.gov. You can freely browse about the American History archives, Historic Newspapers, International Collections, Legislative Information, Prints and Photographs, Veterans History, Early Sounds Recordings, and a lot more!
You can also browse the Library of Congress catalog online at catalog.loc.gov. Search the catalog by Title or Author, Subject, call number, LCCN, ISSN, or ISBN, and keywords!
I know this is not new. I just want to share how useful this government website is. I just found out about this because I’m not browsing websites like this before. Haha!