His own herbarium was purchased by Cornell University and became the basis of that university's collection.
Less than ten years after she buried her husband, Mary’s oldest son, Horace Mann Jr. died at the age of 24 in 1868.
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The Manns had three children: Horace Mann Jr., born February 25, 1844; George Combe Mann born December 27, 1845; Benjamin Pickman Mann born April 30, 1848.
Horace Walpole | Thomas Mann | Horace Greeley | Horace | Horace Silver | Michael Mann | Michael Mann (director) | Manfred Mann's Earth Band | Aimee Mann | Horace Andy | Manfred Mann | Horace Mann | Barry Mann | Herbie Mann | Simranjit Singh Mann | Murray Gell-Mann | Heinrich Mann | Anthony Mann | Woody Mann | Robert Mann | Paul Mann | Lord of Mann | James Mann, 5th Earl Cornwallis | James Mann | Horace Mann Towner | Thomas E. Mann | Steve Mann | Simon Mann | Keith Mann | Horace Trumbauer |