Taking up the old thread about the hue of Sam’s cranial follicles, the following, from “Day by Day” vol. 1, claims light brown hair and reddish brown moustache: "The reviews from Boston newspapers confirmed that Sam’s lecture had been an overwhelming success. This from The Boston Daily Advertiser: Mark Twain is a very good looking man. He is of medium height and moderately slender build, has light brown hair, a reddish brown moustache, regular features and a fresh complexion." - B. Clay Shannon