Caddo Parish Of--agencies, Justice Of The Peace, Judge Ruth W Johnston Shreveport, LA 71101 Phone : (318) 629-6169 Business Category Government Offices-State Government Offices State & Local Government Offices & Public Schools Honorable Ruth W Johnston Oil City, LA 71061 Phone : (318) 629-6169 Business Category Government Offices-County Legislative Bodies Caddo Parish Justice Of Peace Oil City, LA 71061 Phone : (318) 629-6169 Business Category Government Offices-County Legislative Bodies