In 2004 I promised someone I would send data on my Ballou/Jillson line and I would "tease it apart" from my Gilson lines in Groton MA. I forgot who that was and I apologize; if it is still timely I would be able to do it now. We are sorting books for the biennial sale at the Friends of Public Library and I will have some desk time to tease these two lines apart.... and, ultimately, see if there is any connection ... Gilson/Jillson etc. Jean