"Penobscot River (Me.)" . . . . . . . . . . . "Field trips. The Bangor river"@en . . "Juvenile works"@en . . "Motion pictures"@en . . . "Tells how the Penobscot River was one of the busiest stretches of water in the world during the middle of the nineteenth and early twentieth centuries. Takes a look at this era and at what has become of the river since that time."@en . "Penobscot River Valley (Me.)" . .