This is a Message Board Post that is gatewayed to this mailing list. Surnames: Porter Classification: Query Message Board URL: http://boards.ancestry.com/mbexec/msg/rw/SRB.2ACE/12171 Message Board Post: The index to "The Centennial History of Chautauqua Co., NY" by Donna M. Mills includes references to pages such as 39, 210, etc, and then also references to a79, a249, etc. To what do these apparent page references beginning with "a" denote? I have a microfilm copy of the book itself (not the index) and there is no appendix or addendum included. Assistance would be appreciated. Thanks.