As far as I can tell, these hymnals are absent from the database, if anyone should care to add them:
A Short Collection of Hymns, 2nd ed. (Lansingburgh, NY: Silvester Tiffany, 1795).
Divine Hymns or Spiritual Songs, 10th ed. (Norwich: John Trumbull, 1800). [probably other eds. are missing also]
African Methodist Pocket Hymn Book (Philadelphia: Richard Allen, 1818)
African Union Hymn Book (Wilmington: R. Porter, 1822)
African Union Hymn Book, 2nd ed. Enlarged (1829)
Jesus Only, Nos. 1 & 2 (Jackson, MS: Truth, ca. 1901)
His Fullness: Being Sweet Selections and His Fullness Combined and Enlarged (Los Angeles: C.P. Jones, 1928)
New Songs of Paradise (1916) [a successor to Soul Echoes No. 2]
New Songs of Paradise No. 4 (1923)
New Songs of Paradise No. 5 (1934)
New Songs of Paradise No. 6 (1941)
Baptist Standard Hymnal (Nashville: National Baptist, 1961) [updated from the 1924 ed.]
Lift Every Voice and Sing (NY: Church Hymnal Corp., 1981)
Henry Alline, Hymns and Spiritual Songs (Boston: Peter Edes, 1786)
Henry Alline, Hymns and Spiritual Songs, 2nd ed. (Dover: Samuel Bragg, 1795)
Henry Alline, Hymns and Spiritual Songs (Stongingtonport: S. Trumbull, 1802)
Comments
More to be added
Southern Harmony and Musical Companion (1835)—see Archive.org
Wyeth's Repository of Sacred Music (1810; 2nd ed. 1811; 4th ed. 1816, 5th ed., 1818).
Wyeth's Repository of Sacred Music, Part Second (1813)
Spirituals Old and New (1926) National Baptist
Spirituals Old and New, Rev. & Enl. (1927)
Free Spirit (1979) National Baptist
Another
Daniel Belknap, The Evangelical Harmony (Boston, 1800). Scanned on Archive.org. He has three other collections listed in the Hymn Tune Index.
Plus one
Celestial Showers No. 2 (1900) National Baptist
H.T. Burleigh
Old Songs Hymnal (1929)