author
1840–1920
Best remembered for a vivid Civil War memoir, this 19th-century writer turned lived experience into clear, direct history. His work has survived because it offers both personal witness and a strong sense of place.

by William H. Clark
William H. Clark was an American author born around 1840 or 1841 who is chiefly associated with Reminiscences of the Thirty-Fourth Regiment, Mass. Vol. Infantry, published in 1871. Project Gutenberg describes the book as a firsthand account of his service as a private in Company E of the 34th Massachusetts Volunteer Infantry during the Civil War, including the period leading up to the disabling injury he suffered in 1864.
Archive.org's record for the same book also identifies him as "b. 1840 or 41," which fits the dates 1840–1920 given here. The memoir stands out for its immediate, personal view of army life rather than a distant retelling, making it useful to readers interested in how soldiers actually experienced the war.
I wasn't able to confirm many additional biographical details about his life from reliable readily available sources, so this overview stays close to what can be supported: he was a 19th-century American veteran-writer whose surviving reputation rests on a direct, eyewitness Civil War narrative.