Don Harlow has passed away according to a message posted in
soc.culture.esperanto
Don was an active participant in the early days of Conlang-list and
moved over to Auxlang after The Split. He also posted here and in
various other fora occasionally.
Don was a devout Esperantist and helped many people obtain info about
E-o. His skeptical attitude toward the claims of other auxlang
proponents ruffled a few feathers but I was glad he called 'em as he
saw 'em.