The edition, Richie, was not one of the original Pike or Marsh editions, but a reprinting by W. J. Gibbs, publisher of books of hymns (those no longer copyright under British regulations) and owner of a vacation camp, "Ambleside."

The added spirituals are those of "McAdoo's Fisk Jubilee Singers Trio," which I believe was an English group.

There is a thread with information about this edition, which I have, but I have not included the additional songs because I am not certain that they were sung by the original Fisk Jubilee Singers.

My copy of "Negro Spirituals or The Songs of the Jubilee Singers"   was "published by W. J. Gibbs, Bromley, Kent and Ambleside, Clacton-on-Sea," no date. I am surprised to see this book reprinted.

Go ahead and add the spirituals from the W. J. Gibbs volume, but please note their questionable source. I will edit those that you have added above to include the source.

The "Story of the Jubilee Singers, 1880, J. B. T. Marsh, is available in reprint by Cornell University Library, 2009.