“…4), but the bulk of the biographies of Europeans were written by Halsted (20 in total) and concerned with contributors to non-Euclidean geometry in the nineteenth century. Halsted's use of 6 For the early history of the American Mathematical Monthly and its first editors, see also (Finkel 1931;Maxwell 1993). 7 Whereas most of the authors dealt with here are known today, my access to information about Matz is more sparse: He had studied at various American institutions before he received his PhD from Heidelberg and returned to take a post-graduate course at Johns Hopkins University.…”