1993 Event Shamrock Broadcasting, a Disney company, officially takes ownership of Cleveland's WMMS-FM/100.7 and WHK-AM/1420 1930 Event Enterprise (U.S.) beats Shamrock V (England) in 15th America's Cup 1920 Event Resolute beats Shamrock IV (England) in 14th running of America's Cup 1899 Event Columbia (U.S.) beats Shamrock (England) in 11th America's Cup 1810 Event 1st Irish magazine in U.S., Shamrock, is published
