Charles Martin Loeffler: Chronology of selected works with biography highlighting his anti-German sentiments plus links. From the Classical Composers Database.
Charles Martin Loeffler: Portrait, painting background, and biographyical essay on his relationship with artist John Singer Sargent with internal and external links. Part of Natasha's Internet Art Tour pages.
Charles Martin Loeffler: Photograph, biography showing personality and musical development, and purchase link with MP3 audio samples.
Charles Martin Tornov Loeffler (1861-1935): Listing at The Lied and Art Song Texts Page with French lyrics to selected vocal works, some having English, German, or Russian translations.
Loeffler, Charles Martin: Brief background, style notes, and major works from the Grove Concise Dictionary of Music entry at WQXR radio.
Loeffler: La Mort de Tintageles: Summary of the Maeterlinck play for which he wrote a 1905 orchestral score. By Philip Hale for the American Symphony Orchestra's program notes.
Loeffler: Memories of My Childhood: American Symphony Orchestra notes by Carol J. Oja exploring the origins and the reception of the piece, especially in light of 1920s' anti-communism.