This collection contains personal and professional correspondence, data on Smith's studies on plant pathology, photographs of diseased plants, and some genealogical data.

This collection contains minutes of the Society, 1781-1975; minutes of the directors of the Corporation, 1929-1947; membership book (with signatures of early members), 1785; and names of later members. There are also deeds to the meeting house and burying ground; treasurers' accounts; reports of officers and committees; bills and receipts for constructing, maintaining, and repairing the meeting house; cancelled checks; and letters to the Society and its officers, especially Samuel Wetherill, 1883-1884.

This is an interesting and detailed journal of his trip to America and travels therein. Using Philadelphia as his base, Beck commented on the city's society and institutions, and mentions locals, including an interesting note on Titian R. Peale. Other areas visited included: Atlantic City, St. Louis, Colorado, Utah, California and New York, where he visited the Bausch & Lomb Optical Company and Washington D.C., where he met, and described, artist Henry Ulke. The volume is filled with memorabilia: advertisements, photographs, playbills, menus, original pencil and watercolor sketches, some of machinery.

Robert Cushman Murphy (1887-1973), one of the twentieth century's great ornithologists, was curator of mammals and birds at the Brooklyn Museum (1911-1917) and was curator of birds and later chairman of birds at the American Museum of Natural History (1917-1973). The world's foremost authority on sea birds, in 1936, he penned Oceanic Birds of South America, a two volume set. An ardent traveler and explorer, he kept copious notes of his travels, which he typed up, illustrated and had bound. The APS library owns forty-two bound journals. Murphy was made an APS member in 1946. A pioneer in the study of the ecology, a louse, fish, plant, lizard, an Antarctic inlet, spider, and two mountains have acquired his name. This collection contains diaries, journals, articles, addresses and observations of Murph;, generously illustrated with newspaper clippings, photographs, letters, sketches, maps, and charts.