Glimpses #89: Negro Spirituals: Article from the Christian History Institute, with song lyrics.
Hymns & Spirituals: Lyrics and WAV files for ~10 spirituals quoted in "Uncle Tom's Cabin."
Negro Spirituals: Eyewitness account of lyrics and performance, from an article in the 1867 Atlantic Monthly.
Negro Spirituals and Gospel Music: (Historical overview, with a few sample lyrics).
Slave Songs of the United States.: E-text including introduction, lyrics, and annotated music collected by William Francis Allen, 1830-1889, Charles Pickard Ware, 1840-1921, and Lucy McKim Garrison 1842-1877.
The Negro Spiritual: Quarterly containing education, history, and news related to Negro Spirituals: subscription information, news, and reviews.