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LL/65797
1846, 14 March
Wm. A. Pratt, of Alexandria, District of Columbia, "Improvement in Colouring Daguerreotype-Pictures.", Letters Patent No. 4,423, dated March 14, 1846

Book page
Internet - Original source ill-defined
Michael Lehr posted to Facebook, The Daguerreian Society, 6 March 2016
 
LL/65797


 

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