J.P. Ascher is Research Fellow for the history of global mathematics and its cross-historical influences in the history of science and the history of knowledge. Broadly he studies bibliographical methods along with early-modern to digital knowledge dissemination by examining paperwork history, the history of books in society, and the technology of printing and digital transmission. His most recent work examines the early-modern history of learned printing legally authorised by the Royal Society of London's administrative records, placing both the records and the printing into historical context. He is currently working on born-translated mathematics and its relationship to post-war globalised bookselling. His collaborative research interests include cross-historical models for letter-based knowledge dissemination, and enhancing traditional bibliographical techniques for studying materials from the twentieth century. Early-modern letter networks spread knowledge as merchants carried a letter from one city to another. Twentieth-century methods of disseminating knowledge have remarkable similarities: Undersea cables still require international diplomacy, printing texts to mail still costs money, and political barriers can still emphasise one community over another. Samples of mimeography, xerography, and other forms of duplication sorted by time and place would demonstrate the scale of the dissemination of various texts could be studied: It would be a basic contribution to the study of bibliography; and, it would help explain the scale of the dissemination of knowledge in twentieth-century knowledge. He earned his doctorate in English Literature at the University of Virginia, where he studied bibliography and Restoration to eighteenth-century English literature, focusing on printed forms of meaning, poetry, and natural philosophy. He has held fellowships in digital humanities, bibliography, and the history of science variously at the University of Virginia, Harvard University, the Linda Hall Library, the University of Chicago, the Royal Society of London, the Bibliographical Society, and its counterpart in America.