This collection contains a letter, dated June 23, 1892, by Charles Chaillé-Long, an American soldier and a member of Charles Gordon’s staff in the Egyptian Equatoria province. The letter is to British explorer and abolitionist Samuel White Baker, Gordon’s predecessor as Governor-General of Equatoria. The letter addresses Chaillé-Long’s book that has a negative outlook on General Gordon.

The letter also touches on several points of British policy in Africa and slavery. In addition, Chaillé-Long talks about prospective German and English editions of his L'Egypt et ses Provinces Perdu, (1892), mentioning the Macmillan publishing house and a potential German translator, Mr. Leopold Lindau in Berlin. He also encourages Baker to communicate any criticisms regarding his book.