I'm soing to share some with you today. I have most of the links divided by subject matter, but these have general information on a large array of topics in them.
http://www.library.illinois.edu/dnc/Default/Skins/FFF/Client.asp?Skin=FFF&AppName=2&AW=1310757471393 – Digital historical newspapers and magazines
http://historicaltidbits.blogspot.com/ - by decade in 19th century
http://memory.loc.gov/ammem/index.html - from Library of Congress
http://www.teacheroz.com/19thcent.htm - on all aspects of 19th century
http://writersdreamtools.com/view/decades/default.asp?Decade=1650 history by decades
http://news.google.com/archivesearch/advanced_search - historical newspapers
http://dailytimes.com/story.lasso?ewcd=8a4cba60869d2159 – Hill Country Texas historical articles
http://www.loc.gov/library/libarch-digital.html - digitized magazines, newspapers, etc.
http://antiques.rubylane.com/ - all kinds of antiques
http://www.presidency.ucsb.edu/elections.php - presidential election information from 1789
Where do you go when you're looking for historical accuracy for your books?
--Lena Nelson Dooley