The 1940 census will be released online to the public on April 2, 2012 at 9:00 am (eastern). This is the first time a census will be released online. See some interesting comparisons between 1940 & 2010 from the Facts for Features Special Edition news release by the Census Bureau. View this clip from the National Archives to learn about staff preparations & how to use the data. A look back at history will show a poster created to encourage citizens to complete the 1940 census from the Library of Congress.

Addition – Here’s a 1940 map of Yellowstone National Park which is celebrating it’s 140th birthday.