Douglas Twp Office 615 S Maple St Gilman, IL 60938 Phone : (815) 265-7519 Business Category Government Offices-City Village & Twp Legislative Bodies Douglas Township Of--township Hall 615 S Maple St Gilman, IL 60938 Phone : (815) 265-7519 Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools