- “The Archives of American Mathematics,” with Carol Mead, Newsletter of the European Mathematical Society, 105(September 2017): 34–38.
- "The divine truth of mathematics and the origins of linear algebra", Theology and Science, 9(2011): 109–120, on the connection between Hermann Grassmann's mathematics and his religious beliefs.
- “Reform and Tradition in Mathematics Education: The Example of R.L. Moore.” This relates C.S. Peirce to my interest in the American mathematicians G.B. Halsted, his student R.L. Moore, the Moore school of topology and the Moore Method of inquiry-based learning. Much of my activity in this area is done in connection with the Legacy of R.L. Moore Project.
- Thanks to the genealogical work I and other family members have done, and also thanks to the fact that my mother was a descendant of Heinrich Zschokke (1771–1848) whose life and family are well documented, there are substantial, if overlapping, representations on ancestor.com and on wikitree.com.
The Zschokke Foundation has been a long-time activity of the descendants and, more recently, the Heinrich Zschokke Gesellschaft has supported various projects, especially the definitive biography by Werner Ort .
- My Curriculum Vitae.
- The mathematician George Bruce Halsted (1853–1922) named
his publishing company in Austin, Texas, The Neomon, after his term for the
square root of minus one.