He used to run a webpage dedicated to the 1983's classic game, Jumpman He was one of the original organizers for the Perthfur Gathering in March 2009, and contributed 129 articles for [adjective][species] from January 2013 until June 2016.
- JM Horse user profile on Live Journal (archived 14 September 2016)
- Jumpman on JM Horse's Live Journal, dated January 23, 2005. Archived September 14, 2016
- Perthfurs Gathering (archived 28 February 2009)
- JM's articles - [adjective][species]
- JM Horse on Live Journal (archived; post from 30 March 2014)