I found this:
http://www.biblestudents.com/htdbv5/zwt0345.htm
"CAN THE ETHIOPIAN CHANGE HIS SKIN?"
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We answer, No. But all will admit that what the Ethiopian cannot do for himself God could readily do for him. The difference between the races of men and the differences between their languages have long been arguments against the solidarity of the human family. The doctrine of restitution has also raised the question, How could all men be brought to perfection and which color of skin was the original? The answer is now provided. [R3320 : page 53] God can change the Ethiopian's skin in his own due time.
Prof. H. A. Edwards, Supt. of Schools in Slater, Mo., has written for the public press an elaborate description of how Julius Jackson, of New Frankfort, Mo., a negro boy of nine years, began to grow white in September, 1901, and is now fully nine-tenths white. He assures us that this is no whitish skin disease; but that the new white skin is as healthy as that of any white boy, and that the changed boy has never been sick and never has taken medicines. Realizing that his story would be doubted, he interested Dr. F. A. Howard, chief division surgeon of the Chicago and Alton Ry., who corroborates the statement in the following published extract from a letter:
"I am obliged to you for an opportunity of seeing and examining the negro child, Julius Jackson.
"I found his heart action, respiration and temperature perfectly normal and his mental faculties seem acute for one of his age.
"The white skin now covering at least 90 per cent. of his body is, so far as I am able to judge, in full possession of all its organs and those organs seem to be performing their natural functions--no roughness, chalky, or ashen appearance is present.
"It seems to me that the conditions warrant your opinion--the change is certainly caused by chemical conditions of the blood. Very truly,
"F. A. HOWARD."