Caption: Edison Jumbo Dynamo No. 1, Charles Ennis, Engineer, at Left, Charles L. Dean, Superintendent, at Right; New York, NY; 1881; {15.400/8} (jpg).
Caption: Edison Jumbo Dynamo No. 1, Charles Ennis, Engineer, at Left, Charles
L. Dean, Superintendent, at Right; New York, NY; 1881; {15.400/8} (jpg).
Caption: Edison Dynamo, Long-Waisted "Mary Ann"; 1879; {15.400/10}
(jpg).