Theodore Roosevelt (18581919). Theodore Roosevelts Letters to His Children. 1919.
17. TAME WILD CREATURES
Yellowstone Park, Wyoming, April 16, 1903.
I wish you could be here and see how tame all the wild creatures are. As I write a dozen of deer have come down to the parade grounds, right in front of the house, to get the hay; they are all looking at the bugler, who has begun to play the "retreat."