Columbia subject headings:
Harvard subject headings:
Eisenberg (Germany)--History.
Piano makers--Germany--Eisenberg (Rhineland-Palatinate)--History.
Piano makers--Germany--Thuringia.
Piano--Catalogs and collections
Piano--Construction
Piano--History
Princeton subject headings:
Piano makers--Germany--Eisenberg (Rhineland-Palatinate)--History.
Piano--Catalogs and collections.