Items

• [E1163BF], Letter from R W Clark, Exhibition. Minneapolis. Northwestern Electric (1912) to Thomas Alva Edison, October 28th, 1911
  1911-10-28
• [E1240AA], Letter from Exhibition. Minneapolis. Northwestern Electric (1912), R W Clark to Thomas Alva Edison, February 17th, 1912
  1912-02-17
• [E1240AB], Letter from R W Clark, Exhibition. Minneapolis. Northwestern Electric (1912) to Miller Reese Hutchison, March 10th, 1912
  1912-03-10
• [E1240AC], Letter from R W Clark, Exhibition. Minneapolis. Northwestern Electric (1912) to Thomas Alva Edison, March 10th, 1912
  1912-03-10