Items

• [D8311C], Letter from Elektrotechnischer Verein to Thomas Alva Edison, April 26th, 1883
  1883-04-26
• [D9011AAD], Letter from Elektrotechnischer Verein, Mr Hake to Thomas Alva Edison, May 5th, 1890
  1890-05-05
• [D9011AAM], Letter from Elektrotechnischer Verein, Dr Von Stephan to Thomas Alva Edison, November 7th, 1890
  1890-11-07