国际世界语协会
From 1983 to 1990 he edited six extensive volumes of "Akademiaj studoj" ("Academic studies"). In the World Esperanto Association (Universala Esperanto-Asocio or UEA), Eichholz was active as a committee member for Canada (1988–92) and for decades as a special-interest-group delegate for world federalism, Unitarianism and Esperanto terminology.