This Esperanto vocabulary was taken from the Esp - an Esperanto Language Practice Program Copyright (C) 2000 by Michael R. Lewy. The website for Esp states that the word lists were compiled by Doctor Edmund Grimley Evans and was based off the Baza Radikaro Oficiala and that good-hearted permission was given by both Doctor Evans and Professor Geraldo Mattos (President of the Akademio de Esperanto) to use their vocabulary lists for Esp.

Esp was released under the terms of the GPL (http://www.gnu.org/copyleft/gpl.html).