The Boston Public Library has posted a ton of Leslie Jones photos from Harvard, MIT and Wellesley, including this June, 1924 charmer, titled, "Harvard Class Day: Harvard Klass Kow & Klans - students having fun on Class Day."
Some context: The Klan was in the news at Harvard in the 1923-24 school year. In October, 1923, the Crimson reported on Klan recruitment among Harvard men. A local Klansman claimed 300 Harvard men had attended a session in Boston; the year before, some Harvard Klansman switched allegiance from the Cambridge Klan to the Brookline chapter, because the latter was "sufficiently intellectual" for them. But, still that wasn't good enough for the Harvardians, some of whom wanted to organize their own chapter.
Perhaps in response to the Crimson article, some Harvard students draped a banner across Massachusetts Avenue declaring "KOPEY FOR KLEAGLE K. K. K" on Halloween night.
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