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The Cape Libraries Automated Materials Sharing (CLAMS) catalog is the primary catalog of the Nantucket Atheneum.

CLAMS is the shared library catalog of the Cape and Islands Libraries Automated Materials Sharing Network, a non-profit, cooperative association of libraries on Cape Cod, Martha’s Vineyard, and Nantucket.

Member libraries share resources — over 1.6 million items, including books, magazines, and non-print resources — through a computer network with terminals located in each member library and also through an online portal.

A CLAMS library card allows patrons to borrow books and other materials from all member libraries.

The Commonwealth Catalog is a secondary resource that allows library patrons access to libraries that hold unique collections that are not available in the CLAMS catalog.

The Commonwealth Catalog covers millions of titles at participating libraries across Massachusetts. Items requested through the Commonwealth Catalog will take a few days to reach the Nantucket Atheneum.  Nantucket Atheneum will notify you when your items are ready for pickup. Items must be returned to the Nantucket Atheneum.

Please search the CLAMS catalog first. If the material you want is unavailable in the CLAMS catalog, search the Commonwealth Catalog.

Commonwealth catalog search