Statistics for occurrence #1 of “Robert S. Foster” in chapter 6, page 177 of William Schouler, A history of Massachusetts in the Civil War: Volume 2:
...in 1861 were John Pickett, John Meacom, Robert S. Foster, Charles Moulton, Zachariah Cole; in 1862, John Meacom, John Pickett, Robert S. Foster, Augustus Moulton, Joseph Wilson; in 1863, John Meacom, Robert S. Foster , Joseph Wilson, John Ober, William G. Woodberry; in 1864, Robert S. Foster, Joseph Wilson, Lawson Walker, James Hill,
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