LOVES Ancestry.com version of the 1940 Census. The Image Viewer is fast, sleek, easy to use — aahh flawless.
My only request is to please get all 50 states ASAP! I do not have any ancestors in:
DE, RI, NV, IN (or Panama Canal, American Samoa or Virgin Islands).
Oh, and please call http://1940census.archives.gov and tell them how deploy Scalable, Well Architected, Web Apps, please.