Kwa languages

See also what's at your library, or elsewhere.

• Niger-Congo languages

• Gbe languages

• The Ewe-Speaking Peoples of the Slave Coast of West Africa: The Religion, Manners, Customs, Laws, Languages, &c. (London: Chapman and Hall, 1890), by A. B. Ellis (page images at HathiTrust)

Items below (if any) are from related and broader terms.

• A Bibliography of Congo Languages (Chicago: University of Chicago Press, 1908), by Frederick Starr (multiple formats at archive.org)

• Bantu Historical Linguistics: Theoretical and Empirical Perspectives, ed. by Jean Marie Hombert and Larry M. Hyman (PDF at Stanford)

• A Comparative Grammar of the South African Bantu Languages: Comprising Those of Zanzibar, Mozambique, the Zambesi, Kafirland, Benguela, Angola, the Congo, the Ogowe, the Cameroons, the Lake Region, Etc. (London: Kegan Paul, Trench, Trübner and Co., 1891), by J. Torrend (multiple formats at archive.org)
• Comparative Handbook of Congo Languages (1903), by Walter Henry Stapleton
  • page images at Google; US access only
  • multiple formats at archive.org

• Appendix to the Dictionary and Grammar of the Kongo Language, As Spoken at San Salvador, the Ancient Capital of the Old Kongo Empire, West Africa (1895), by W. Holman Bentley (multiple formats at archive.org)
• Dictionary and Grammar of the Kongo Language, As Spoken at San Salvador, the Ancient Capital of the Old Kongo Empire, West Africa (1887), by W. Holman Bentley (page images at HathiTrust)

• Bantu Historical Linguistics: Theoretical and Empirical Perspectives, ed. by Jean Marie Hombert and Larry M. Hyman (PDF at Stanford)

• Bantu Historical Linguistics: Theoretical and Empirical Perspectives, ed. by Jean Marie Hombert and Larry M. Hyman (PDF at Stanford)

• Societies, Religion, and History: Central East Tanzanians and the World They Created, c. 200 BCE to 1800 CE (c2008), by Rhonda M. Gonzales (HTML and PDF files at gutenberg-e.org)

• Theoretical Aspects of Bantu Tone, ed. by Larry M. Hyman and Charles W. Kisseberth (PDF at Stanford)

• The Ila-Speaking Peoples of Northern Rhodesia (2 volumes; London: Macmillan, 1920), by Edwin William Smith and Andrew Murray Dale
  • Volume I: multiple formats at archive.org
  • Volume II: multiple formats at archive.org

• Narrative of an Expedition to Explore the River Zaire, Usually Called the Congo, in South Africa, in 1816, Under the Direction of Captain J. K. Tuckey, R. N.; To Which is Added, The Journal of Professor Smith (London: J. Murray, 1818), by James Hingston Tuckey, contrib. by Christen Smith (multiple formats at archive.org)

• Appendix to the Dictionary and Grammar of the Kongo Language, As Spoken at San Salvador, the Ancient Capital of the Old Kongo Empire, West Africa (1895), by W. Holman Bentley (multiple formats at archive.org)
• Dictionary and Grammar of the Kongo Language, As Spoken at San Salvador, the Ancient Capital of the Old Kongo Empire, West Africa (1887), by W. Holman Bentley (page images at HathiTrust)

• The Musical Accent: or, Intonation in the Kongo Language (1922), by K. E. Laman, contrib. by Wilhelm Heinitz (multiple formats at archive.org)

• Swahili: Basic Course (second edition, 1968; with supplementary audio material), by Earl W. Stevick, J. G. Mlela, and F. A. Njenga (PDF at fsi-language-courses.org)