Columbia University's Rare Book & Manuscript Library is located on the 6th Floor of Columbia University's Butler Library. The library holds the special collections of Columbia University, as well as the Columbia University Archives. The range of the library's holdings spans more than 4,000 years, from cylinder seals created in Mesopotamia to contemporary artists' books. In addition to printed and manuscript resources, the library contains cuneiform tablets, papyri, ostraca, astronomical and mathematical instruments, maps, works of art, photographs, posters, early printing presses and papermaking equipment, type specimens, sound and moving image recordings, theater set models, puppets, masks, ephemera and memorabilia.