James Mosley

James Mosley (18 April 1935 – 25 August 2025) was a British librarian, preservationist and historian specialising in the history of printing, type and lettering.

Mosley was from 1958 to 2000 Librarian of the St Bride Printing Library in the City of London, where he curated and worked to expand the museum's large collection of printing and lettering materials and books. This collection greatly expanded with the close of the metal type era, which saw many companies and printing shops supply St Bride's with their equipment and archives. He became a visiting lecturer and professor at the University of Reading in 1964, and was a founding member of the British Printing Historical Society in that year, as well as the first editor of its journal. Mosley received the Individual Award of the American Printing History Association in 2003 and the Gold Medal of the Bibliographical Society in 2017.

He is credited with authoring Lorem Ipsum in 1966, per request of Letraset to create dummy text for graphic design.