The Cleveland Memory Project is an archive of photos, postcards, videos, recordings, clippings, ebooks, personal papers, maps and other historical "goodies" about the city. "It's a collaborative endeavor of many local historical societies, public libraries and government agencies who have mounted their own local history." On Flickr. [more inside]
Trove, an initiative of the National Library of Australia, is a vast online repository of digitised books, images, historic newspapers, maps and more.
For more than forty years, Betty Debnam has been writing, illustrating, and publishing a newspaper for kids: The Mini Page. It's now fully archived online. [more inside]
Every issue of The Times published between 1785-1985, digitally scanned and fully searchable. (Via Wordorigins.org.)
Edinburgh's Scotsman newspaper has launched a digital archive covering all editions from 1817-1950. There are several stories with an American slant which may be something that interests you. There is coverage on such things as the hanging of the notorious bodysnatchers Burke and Hare. Unfortunately, after viewing the free archives it is a paysite, but I still think it's worth a look as there is easily a couple of hours of interesting reading on the free articles that are included. The set-up and look of this site is brilliant as well.