Items
Relation is exactly
Gibbs, John Dixon
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[D8624N], Report from Siemens and Halske, November 1886 1886-11-00 -
[X001E10A], Letter from Frank Julian Sprague to Edward Hibberd Johnson, September 13th, 1886 1886-09-13 -
[X120CAN], Letter from Frank Julian Sprague to Edison Electric Light Co, Edward Hibberd Johnson, September 13th, 1886 1886-09-13