Statistics for occurrence #1 of “Langley, John Williams” in alphabetic letter L, entry group 1, entry langley-john-williams of Harper's Encyclopedia of United States History:

... Langley, John Williams
Educator; born in Boston, Oct. 21, 1841; graduated at Harvard College in 1861; assistant Professor of Physics in the United ...
Max. Freq. Min. Freq.
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† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.