Did you know what happened on March 4, 1861? That is the day that the US Government Printing Office opened its doors. Did you know that the GPO now has a new name? It is now the Government Publishing Office, to reflect its transforming role of meeting the information needs of Congress, Federal agencies, and the public. Also on this day in history, Abraham Lincoln was sworn into office as President of the United States on March 4, 1861.