I'm very happy to see at least part of the photo archives of LIFE magazine being made available online by Google.
These photographs are an historical treasure-trove, and should be invaluable to writers, scholars and students. I don't think all of them are yet available, but what there is has already caught my interest. They range from the 1860's to the 1970's. A few selections (click to enlarge):
in June 1864, prior to their fight with the CSS Alabama
at Bedloe's Island dock in the East River, June 25th, 1885
(first manned mission to land on the moon), July 24th, 1969
There are thousands of other images, enough to keep me happily browsing in my spare moments for months to come. It's well worth a visit.