This is a duplication of the info I posted at another thread, but it may be convenient for it to be here, too.
Thomas Wentworth Higginson's Atlantic Monthly article "Negro Spirituals" (1867) was incorporated later as a chapter into his book Army Life in a Black Regiment (1869; available now Penguin classics, 1997). The article itself is online at the following websites.
(1) The Atlantic Online (Stewie's link)
(2) about.com
(3) Etext Center, University of Virginia
(4) xroads.virginia.edu (Susan's link)
(5) David Hart's Library of E-Texts
Aditional info. The whole book of Col. W. Mallory, Old Plantation Days (Hamilton, Ontario?: s.n., 1902?) is online on the web in one page at Documenting the American South.쳌@Lyrics of some spirituals are included.
Masato