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June 20, 1924. Washington, D.C. "Mah-Jongg at bathing beach." View full size. National Photo Company Collection glass negative, Library of Congress.
I just recently read (today, for that matter) that Mahjongg was a wildly popular game in the 1920s. Great to see picture evidence to back up my research! I love the swim caps, too. Thank you, Shorpy.com, for these photos. I especially love the ones from the 20s.
I've never seen a floating game of Mah Jong before! I wonder if the tiles float.