<PAGE>
EXHIBIT A
AGREEMENT
TO
JOINTLY FILE SCHEDULE 13D
The undersigned hereby agree to jointly prepare and file with
regulatory authorities a Schedule 13D and any future amendments thereto
reporting each of the undersigned's ownership of securities of UnionBancorp,
Inc. and hereby affirm that such Schedule 13D is being filed on behalf of each
of the undersigned.
DATE: August 4, 2000 DENNIS J. McDONNELL
Chicago, Illinois
/s/ Dennis J. McDonnell
An Individual
DATE: August 4, 2000 KATHLEEN A. McDONNELL
Chicago, Illinois
/s/ Kathleen A. McDonnell
An Individual
DATE: August 4, 2000 DENNIS J. McDONNELL TRUST
Chicago, Illinois dated as of May 9, 1991
By: /s/ Dennis J. McDonnell
Title: Trustee
Name: Dennis J. McDonnell
9
