- Höller, Karl - http://www.wqxr.com/cgi-bin/iowa/cla/learning/grove.html?record=4304
Brief musical biography noting teaching and administrative work plus a summary of compositional style from the Grove Concise Dictionary of Music entry at WQXR radio.
- Karl Höller - http://www.classical-composers.org/cgi-bin/ccd.cgi?comp=hoeller
Biography with career summary from the Classical Composers Database.
- Karl Höller - http://www.imdb.com/name/nm1745963/
Brief filmography linked to credited film from the Internet Movie Database.
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