Research for A. L. Russell has developed nothing. There was one photographer in New York in 1901 by that name but no connection to Chillicothe, MO, could be made.
26 Oct 2018 Update
Finally a positive connection has been made to A L Russell. At the right is a copy of page 312 from "Past and Present of Livingston County", published 1913. For 1890, it lists an A L Russell as one of the original staff, instructor of Band Music and Photography in Chillicothe Normal School in Chillicothe, MO.