Black History Month: Unsung Heroes

Americans have recognized black history annually since 1926, first as "Negro History Week" and later as "Black History Month." What you might not know is that black history had barely begun to be studied-or even documented-when the tradition originated. Although blacks have been in America at least as far back as colonial times, it was not until the 20th century that they gained a respectable presence in the history books.

TIME takes a look at 10 little known African-American figures whose accomplishments were monumental.

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