Publications for 04/1889

• Man wanted for forging Ralph Hemingray's signature
• Holtzer battery
• J. Slater Lewis resigns his position as managing director of The Telegraph Manufacturing Co.
• Empire China Works insulator
• Series Incandescent Lighting
• Glass ballot box introduced
• R. G. Hemingray left for Cincinnati
• J. Slater Lewis resigns his position as managing director of The Telegraph Manufacturing Co.