March 23, 1911
“Head of navigation” is a phrase describing the upstream limits of boat traffic. Above this point on the Pawtucket River are the falls, seen in the ‘Main Street Bridge’ image. Here you are looking north toward that bridge (and the falls) at Main Street. Today this view is nearly obscured by the bridge for Interstate Highway 95.
Above the falls the River is renamed as the Blackstone. As of 2014, A corridor in the Blackstone River Valley has been designated as a National Historical Park that will preserve the industrial heritage that harnessed water power for the textile mills. This card offers a picture of the importance of the Pawtucket River as a port providing navigable access to nearby Providence and the Narragansett Bay.