West, William H. "The most stirring scene ever produced on any stage." Back cover of minstrel program. 1899. Strobridge Litho. Co., Cin'ti & New York. From the Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA (found on Clkr.com).
...above, the source of the image (which shall be found at the conclusion of this post: patience, dear readers), published in 1898 by the Pearson Publishing Company, New York. In describing the image, the book mentions a very unsplendid aspect of the war, for which we must give it at least some credit...
....Specifically, it refers to the losses that the US Army suffered through disease--most of those coming from troops who never even left the country. Here is how a 2004 history of military medicine in the Spanish American War addresses the topic:
"108,000 volunteers from various states had been assembled in a handful of national encampments located in Georgia, Florida, Virginia, and Pennsylvania. With some notable exceptions, military officers had very little knowledge of the role of hygiene in the prevention of disease. As a result, the sanitary facilities in the camps rapidly became overwhelmed, and the resultant situation was appalling. Typhoid fever epidemics broke out in all of the encampments. Regiments in these camps suffered 20,738 cases of typhoid fever, which resulted in 1,590 fatalities."
Source: Vincent Cirillo. Bullets and Bacilli: The Spanish-American War and Military Medicine. 2004. Rutgers University Press.: New Brunswick, New Jersey, USA.256 pp. ISBN: 0-8135-3339-2 (hardcover). Found at: The Journal of Clinical Investigation
And here is how it is covered (sort of) in the Bully 1898 Photographic History of the war: