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1st US law school established at University of Pennsylvania (1791),
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1st life insurance policy issued in US (Phila) (1792),
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1st Irish magazine in US, Shamrock, is published (1810),
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1st street-cleaning machine in US 1st used in Philadelphia (1854),
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1st road with a depressed trough (Texas) opens to traffic (1925),
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German submarine U-127 sinks (1941),
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USS Swordfish becomes 1st US sub to sink a Japanese ship (1941),
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Massachusetts issues 1st US vehicular license plate tabs (1942),
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1st time 4 people in space (1964),
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Soviet Venera 7 is 1st spacecraft to land on another planet (Venus) (1970),
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NASA launches Intelsat V satellite, no. 503 (1981),
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