collection can be traced to even before the museum's 1799 founding: the maritime fur trade, as well as the trading of iron to local tribes, made the exchange of art objects a frequent occurrence. As Richard Conn writes, "in some cases, objects of considerable importance were given by their native owners as gifts to their European trading partners. The intent here was probably to enhance the trading relationship and to insure that the Yankee or British ship would return next year with more iron." Oceanic art Featuring objects from over 36 different groups of islands in Polynesia, Melanesia, and Micronesia, the Peabody Essex Museum's collection of Oceanic art contains over 15,000 objects in total. These objects, consisting of sculptures, weapons, clothing, and more, include pieces made from traditional Oceanic materials such as porpoise teeth, abalone, and human hair. Also worth noting is the museum's particularly substantial collection of Hawaiian art, which includes over 5,000 objects. While Salem had little direct trade with Hawaii during the 18th and 19th centuries, regional trade and donations from prominent sea captains led to the acquisition of many significant pieces, including some associated with Kamehameha I and James Cook. Photography PEM's collection of photography is its largest single collection by number of objects, featuring over 850,000 images. The collection began in 1840, just one year after the invention of photography. It includes work by pioneering photographers such as William Henry Fox Talbot and Antoine Claudet. It also features a collection of rare Civil War photographs by Matthew Brady, one of the first American photographers. The collection has a vast variety of subjects and styles, from records of native life in the Philippines to photographs by Walker Evans which document the Great Depression. Library The museum has extensive collections of rare books, manuscripts, and ephemera in the Phillips Library. On December 8, 2017, Dan L. Monroe, PEM's Director and CEO, issued a press release announcing that of historical documents would be permanently relocated to Rowley, Massachusetts; Plummer Hall and Daland House, the two historic buildings which had housed the Phillips Library, would be utilized as office and meeting space. Architecture in the collection The museum owns 24 historic structures and gardens, some of which are concentrated in the old Essex Institute grounds which now form the Essex Institute Historic District. Five of these buildings are National Historic Landmarks and eight others are listed on the National