Items
Creator is exactly
Egerton, Henry Clifford
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[CK603AAV], Letter from Henry Clifford Egerton to Thomas Alva Edison, May 1923 1923-05-00
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[CK603AAW], Letter from Henry Clifford Egerton to Charles Edison, June 19th, 1923 1923-06-19
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[CK620ABZ], Letter from Henry Clifford Egerton to Thomas Alva Edison, April 14th, 1922 1922-04-14
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[CM10BB], Letter from Henry Clifford Egerton to Thomas Alva Edison, September 7th, 1922 1922-09-07
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[PT5123B], Technical Note, Henry Clifford Egerton, August 1920 1920-08-00