There was an instance of “old man” in the Canon, though :)
“At breakfast-time he looked worn and haggard, with a little fleck of feverish color upon either cheek. “You are knocking yourself up, old man,” I remarked. “I heard you marching about in the night.” “No, I could not sleep,” he answered.”
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Date: 2018-12-04 09:11 am (UTC)“At breakfast-time he looked worn and haggard, with a little fleck of feverish color upon either cheek.
“You are knocking yourself up, old man,” I remarked. “I heard you marching about in the night.”
“No, I could not sleep,” he answered.”
—The Sign of Four