| 1913 | Lincoln High School opened at Crescent Avenue. |
| Main Post Office opened at Washington Street. | |
| Jersey City adopted a commission form of government under the Walsh-Leavitt Commission Government Act of 1911. The voters elect a commission of five members from which one is chosen mayor. Mark Fagan was the first mayor under this plan. It replaced the aldermanic form of government. | |
| 1914 | Margaret S. Herbermann, MD was appointed the first woman surgeon to Jersey City Hospital, later the Jersey City Medical Center. |
| 1916 | "Black Tom" explosion (July 30). |
| 1917 | Frank Hague elected mayor of Jersey City, beginning an era of political control in Hudson County. |
| 1920s | Headquarters for The Trust Company of New Jersey developed by William Heppenheimer. |
| 1921 | School for Crippled Children opened at Clifton Place. |
| Dempsey-Carpentier fight takes place at Boyle's Thirty Acres (July 2). | |
| 1924 | Colgate clock installed at Jersey City waterfront. |
| Hotel Plaza built in Journal Square area at Sip Avenue. | |
| 1925 | Mary T. Norton elected the first Congresswoman from Hudson County, representing Bayonne and Jersey City. |
| 1927 | Holland Tunnel opened. |
| Trust Company of New Jersey headquarters opened at Journal Square. | |
| The founding of the New Jersey State Normal School (now New Jersey City University) is approved by the state legislature. | |
| 1928 | The Stanley Theater opened at Journal Square. |
| 1929 | The Loew's Jersey Theater opened at Journal Square. |
| Replacement Colgate Clock installed at Jersey City Waterfront. | |
| The New Jersey State Normal School opened; it offered a three-year teacher training program for elementary, kindergarten-primary, and secondary teacher training. | |
| 1930s | Founding of Snyder High School on Bergen Avenue. |
| 1931 | Medical Center Complex and Margaret Hague Maternity Hospital opened. |
| Dedication for opening of A. Harry Moore School. | |
| Lena Edwards, MD, became a staff physician at the Margaret Hague Maternity Hospital. | |
| 1932 | Pulaski Memorial Skyway, connecting Jersey City and Newark, is opened. |
| 1935 | The New Jersey State Normal School became the New Jersey State Teachers College (now New Jersey City University) and offered a four-year Bachelor of Science in Education degree. |
| 1936 | New Jersey State Teachers College offered a degree program in Health Education and Nursing in cooperation with the Jersey City Medical Center. |
| 1937 | Roosevelt Stadium opened at Droyers' Point under the federal Works Progress Administration (WPA). |
| New Jersey National Guard Armory construction completed under a federal WPA project. | |
| 1941 | Murdoch Hall constructed as part of the Medical Center Complex for the training of nurses. |
| 1942 | Miss America Diner opened on Westside Avenue. |
| 1944 | Fitgerald-Holota Memorial Park dedicated at intersection of Grove Street and Newark Avenue. |
| 1946 | Jackie Robinson broke the "color line" in professional baseball at Roosevelt Stadium. |
| 1947 | Frank Hague retired as Mayor of Jersey City. |
| 1949 | John V. Kenny brings an end to Hague regime. |
| 1950 | Dedication of Statue of Christopher Columbus at Journal Square. |
| By: Carmela Karnoutsos Project Administrator: Patrick Shalhoub |
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