Publications for 08/1886

• William Brookfield
• Edison invents baseball umpire; home plate is insulated with glass insulators
• Edison invents baseball umpire; home plate is insulated with glass insulators
• Cautious Receiver Brookfield; received court order for Kalbfleisch
• North American Telegraph Co. opens office
• William Brookfield and the Bushwick Glass Works
• Batteries of the Partz Electric Company