Old Slater Mill

Historical marker location:

67 Roosevelt Ave, Pawtucket, Rhode Island

( Marker is on Slater Street just east of Roosevelt Avenue, on the right when traveling east.)

Blackstone River Valley National Historical Park, Slater Mill Historic Site. National Park Service, U.S. Department of the Interior.

Rhode Island was the last state to ratify the U.S. Constitution, finally joining the union on May 29, 1790, after initially rejecting the document.