Carl Ruggles
Biography and photograph from Presser music publishers. Emphasis on the personality of the composer and the powerful complexity of his music.

Carl Ruggles
Listing in AskART artists' directory includes biography, image gallery, listing of relevant books, and other information about his visual artistry and his music.

The Carl Ruggles Papers
Title page, collection information, correspondence, programs, art exhibit catalogs, clippings, personal papers, art by himself and others, his music, works by others, his recordings, and music by others. In the Irving S. Gilmore Music Library of Yale University.

Ruggles, Carl (née Charles Sprague Ruggles)
Provides a brief article and a set of categorized links to other related sites. Genealogical information is provided on a separate page connecting him to a large family with origins in the 15th century.