1866 Civil Rights Act 14 Stat. 27-30, April 9, 1866 A.D. CHAP. XXXI. An Act to protect all Persons in the United States in their Civil Rights, and furnish the Means of their Vindication.
The state of Rhode Island is 1,545 square miles in total. This includes 500 square miles of water (including small bays and inlets), as well as 1,045 square miles of land.
A US acre is 1 sq/mi = 640 acres 663,267 x 640 = 424,490,880 acres http://en.wikipedia.org/wiki/Square_mile. According to Wikipedia, the area of Alaska is 663,267 square miles. Since there are 640 acres per square mile, then Alaska covers 424,490,880 acres. * 228 million acres that are part of the federal domain.