Items

• [D7802ZHU1], Telegram from Joseph Henry, National Academy of Sciences to Thomas Alva Edison, April 16th, 1878
  1878-04-16
• [D7802ZHW], Telegram from Joseph Henry to Thomas Alva Edison, April 17th, 1878
  1878-04-17
• [SM011029b], Clipping, Joseph Henry, 1873-1880
  1873-1880
• [X031A], Report from Exhibition. Philadelphia Centennial (1876), Joseph Henry, William Thomson (Lord Kelvin), June 20th, 1876
  1876-06-20
• [X031C], Report from Exhibition. Philadelphia Centennial (1876), Joseph Henry, William Thomson (Lord Kelvin), July 8th, 1876
  1876-07-08
• [X031D], Report from Exhibition. Philadelphia Centennial (1876), Joseph Henry, August 1st, 1876
  1876-08-01