The History of American States By waytoocool Dec 7, 1787 Delaware Period: Dec 7, 1787 to Jun 25, 1788 First 10 States to Join the Union Dec 12, 1787 Pennsylvania Dec 18, 1787 New Jersey Jan 2, 1788 Georgia Jan 9, 1788 Connecticut Feb 6, 1788 Massachusetts Feb 28, 1788 Maryland May 23, 1788 South Carolina Jun 21, 1788 New Hampshire Jun 25, 1788 Virginia
