Object.Photo. Modern Photographs: The Thomas Walther Collection, 1909-1949 is the result of a four-year collaborative project between the departments of photography and conservation at the Museum of Modern Art. The project includes a Web site with in-depth information on each photograph and essays by scholars, which allows visitors to explore the collection; a hard-bound catalogue of the collection; an interdisciplinary symposium examining the way the digital age is changing our engagement with historical photographs; and an exhibition of select works from the collection. Modern Photographs from the Thomas Walther Collection, 1909-1949 opens December 13 in the Edward Steichen Galleries of the museum. The exhibition includes work by such photographers as Berenice Aboott, Karl Blossfeldt, Lucia Moholy, Laszlo Moholy-Nagy, and Paul Strand, among others.