Janice G. Schimmelman is Professor Emerita of Art History at Oakland University, Rochester, Michigan. Her research has been published by the American Philosophical Society, the American Antiquarian Society, Oak Knoll Press, G. K. Hall, and the Winterthur Portfolio. She is the author of The Tintype in America 1856-1880, American Photographic Patents 1840-1880, The Iron Plate in American Photography (blurb.com), and American Imprints on Art through 1865.