yale university's beinecke rare book and manuscript library is a vast and varied archive. they have things like whole books scanned in for your browsing pleasure as well as a lot of writer's personal papers. the photographs are scanned big for easy viewing. above is a sort of arbitrary group from the collection with a slight emphasis on cat pictures. search the archive here.
[all from yale beinecke library]
archive is a weekly column by asha schechter that appears each wednesday on i heart photograph.