The organ lexicon mentioned by Wolfgang Brommer is: Orgelwoordenboek =
Organ dictionary, by Wilfried Praet and others.

It was published in Zwijndrecht, Belgium, in 1989 by CEOS.  The ISBN is
9090027424.  LC record no. 89-212233.  330 pages, so it is pretty big,
covering (as Wolfgang mentioned) Catalan, Danish, Dutch, English,
Esperanto, French, German, Italian, Norwegian, Spanish, and Swedish (but
not American).

 [ I feel that the sample translations given in Digest 970414 are not
 [ good.  I hope can get a report comparing the quality of the Belgian
 [ book, "Orgelwoordenboek," with the 4-language Dutch book on building
 [ church organs, "Orgelbouwkunde".  -- Robbie