B. M. Bower 
Blink [EPUB ebook] 

He could ride anything in his string, and he was always just where he was wanted. He never went to town when the others clattered off for a few hours’ celebration more or less mild, he never took part in any of the camp fun, and he never offended any man. If any offended him they did not know it unless they were observant; if they were, they would see his pale lashes wink fast for a minute, and they might read aright the sign and refrain from further banter. So Blink, though he was counted a good man on roundup, was left pretty much alone when in camp.