May 1 US Quarantine Station opens on Angel Island, San Francisco Bay May 11 18th Kentucky Derby: Lonnie Clayton aboard Azra wins in 2:41½ May 19 American engineer Charles Brady King invents the pneumatic hammer May 19 National Society of Colonial Dames of America founded May 20 George Sampson patents clothes dryer May 21 Ruggero Leoncavallo's opera "I Pagliacci" premieres in Milan May 22 Dr Washington Sheffield invents the toothpaste tube Sierra Club Formed May 28 Sierra Club formed by John Muir and others in San Francisco, for conservation of nature Environmental Philosopher John Muir Apr 1892 Historical Events by Year Jun 1892 Famous People Who Were Authors Dictators Explorers Outlaws Queens Spies
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