Wikipedia
The Esperanto League for North America, Inc., doing business as Esperanto-USA (Esperanto: Esperanto-Ligo por Norda Ameriko), is the main organization of speakers and supporters of the international language Esperanto in the United States. It was founded in 1952 in Sacramento, California. Headquartered in Emeryville, California, Esperanto-USA is a 501(c)3 nonprofit organization and is the US section of the Universala Esperanto-Asocio. The current president of E-USA is Orlando Raola. Phil Dorcas is the vice-president.
Esperanto-USA administers the largest Esperanto-language book service in the Americas. It publishes a bimonthly bulletin Usona Esperantisto. It also publishes reference works about Esperanto. The organization's leadership consists of a president, vice-president, secretary, treasurer, and nine directors; it also has many commissioners responsible for Esperanto-USA's activity in various connections (e.g. audio-visual service; cooperation with libraries; relations with local Esperanto clubs; etc.) Membership is about 650.
The youth section of E-USA is USEJ (Usona Esperantista Junularo).