In a 1900 book, he joins 3 others (& a dog) after noting his "life is simply unbearable without a bit of courage"
He 
was gray also, from his long beard to his rough boots, and he looked stern and ... 
Toto was not gray; he was a little black dog, with long silky hair and small black ... 
After the first few whirls around, and one other time when the house tipped badly,
... [DOC] [TLE] Full text of "The wonderful wizard of Oz" - Internet Archive [PAR] Chicago, April, 1900.