(also known as Akers), Pass Manchac, South boundary of Tangipahoa Parish. Part of line dividing Isle of Orleans from Florida Parishes. Boundary between British West Florida and Spanish Louisiana, 1763-1783; Spanish West Florida and French Louisiana., 1803; U.S. and Spanish West Florida, 1803-1810. Manchac is an unincorporated community in Tangipahoa Parish. Pass Manchac Light is on the Historic Registry of Historical Places
