Statistics for occurrence #1 of “Lieutenant-Colonel Ryder” in chapter 1, page 105 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1: prelminary narrative:

... Lieutenant-Colonel Ryder
Slocum. The first of these included the 33d Mass. (Lieut.-Col. Godfrey Rider, Jr., Steinwehr's division) and the second included ...
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