Statistics for occurrence #1 of “Mr. Elliot” in chapter 10, page 65 of Historic leaves, volume 8, April, 1909 - January, 1910:

...December 17. The new staff of the department included Major David C. Houston, Chief Engineer, and Captain Henry L. Abbot, Chief of Topographical Engineers; the latter would therefore be regarded as Mr. Elliot 's immediate commander. It appears from his paper on Port Hudson that Mr. Elliot commenced immediately to practice one branch of his profession, for he says that on January 14, 1863, he completed a ...
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