business. Flatiron Building constructed. Lina Rogers Struthers became the first school nurse in the United States. 1903 New York Highlanders baseball team active. Williamsburg Bridge, New Amsterdam Theatre, and Lyric Theatre open. Luna Park opens. Sea Lion Park closes. The Coney Island Polar Bear Club founded. 1904 June 15: Steamboat General Slocum, carrying 1300 to a picnic site on Long Island, catches fire and sinks while on the East River alongside Astoria, Queens. Over 1000 passengers are killed, a major factor in the demise of the Little Germany neighborhood. New York City Subway begins operating. IRT wildcat strike. Stuyvesant High School and Hispanic Society of America established. Dreamland opens. 1905 March 14: Fire swept through an overcrowded tenement at 105 Allen Street on the Lower East Side, killing at least twenty people and injuring numerous more. Institute of Musical Art founded. Columbus Circle laid out. Ratner's restaurant in business. 291 (art gallery) opens. 1906 June 25: Stanford White is shot and killed by Harry Kendall Thaw at what was then Madison Square Gardens. The murder would soon be dubbed "The Crime of the Century". Hammerstein Ballroom opens. DeWitt Clinton Park laid out. Society for the Suppression of Unnecessary Noise established. Mamma Leone's restaurant in business. 1907 December 31: Times Square Ball drop begins. Plaza Hotel in business. Japan Society founded. Ziegfeld Follies active. Alexander Hamilton U.S. Custom House and Audubon Terrace built. 1908 – Singer Building constructed. 1909 September/October: Hudson-Fulton Celebration of the 300th anniversary of Henry Hudson's discovery of the Hudson River and the 100th anniversary of Robert Fulton's first successful commercial application of the paddle steamer. New York Amsterdam News begins publication. Metropolitan Life Insurance Company Tower built. International Women's Day held. 1910s 1910 August 9, 1910 – Reformist Mayor William Jay Gaynor is shot in Hoboken, New Jersey by former city employee James Gallagher. He eventually dies in 1913. Pennsylvania Station built, and the first method to traverse the Hudson River is completed. Gimbels shop in business. 1911 March 25: 146 employees, mostly women, are killed in the Triangle Shirtwaist Factory fire near Washington Square Park, some by being forced to jump from the building by the fire. July: 1911 Eastern North America heat wave. New York Public Library Main Branch building constructed. Negro Society for Historical Research established. Winter Garden Theatre opens. The Masses begins publication. Gun control Sullivan Law takes effect in New York State.