I'd look thru the volumes of letters and sketches etc. in the months susurrounding the holidays and look for any asides or comments Twain wrote to friends and family. There is on. There is one sketch on New Years Day he wrote in the mid-1860's, I forget which year. It's in Vic Doyno's *Writings of an American Skeptic& and is described in my (*Cradle Skeptic* at the Forum website. wes britton