19th centuryJuly 16, 1867: Concrete Gets Some Positive ReinforcementJuly 14, 1868: Tape Measure Clicks InJuly 4, 1776: Preserving the DeclarationJune 25, 1876: Was Custer Outgunned at Little Bighorn?June 23, 1868: Tap, Tap, Tap, Tap, Tap ... Ding!June 15, 1878: Muybridge Horses Around With Motion PicturesJune 1, 1849: Stanley Twins Steam Into HistoryMay 22, 1859: It's Elementary, My Dear ReaderMay 13, 1884: Electrical Engineers Meet Up, Light UpMay 6, 1840: Queen Victoria Gets StampedMay 5, 1809: Hats Off to First U.S. Woman Patent-HolderMay 1, 1884: Everything's Up to Date in Windy CityApril 29, 1873: Railroads Lock and LoadMarch 26, 1850: Birth of a Socialist Sci-Fi WriterJune 12, 1897: The Swiss Army Gets Its Own KnifeJune 5, 1833: Ms. Software, Meet Mr. HardwareMay 30, 1898: Krypton Discovered, Decades Before Superman Arrives
