Drying fish swim bladders, or 'sounds' at Matinicus Island, Maine circa 1870.

Drying fish swim bladders, or 'sounds' at Matinicus Island, Maine circa 1870.

Drying fish swim bladders, or 'sounds' at Matinicus Island, Maine circa 1870. Behind drying rack just off the quay is plumb stem sloop CACTUS. Dried bladders are used to produce isenglass. Note: 1 of 3 images adhered to backer. One of a series of 42 small photos of Matinicus, or believed to be Matinicus - LB2013.21.1724 -1758 with many duplicates.