On April 2, 2012, the 1940 Federal Census of the United States will be released. For amateur genealogists like me, this is exciting news. I was very interested when the 1930 census was released ten years ago. My parents and grandparents will be on the 1940 census, living in Cambridge and Somerville, Massachusetts. Actually my mom might have still been living in Chelsea at the time. We will see. The census is released after 72 years.