Example image of eyePlorer eyePlorer map for '1873': Common year starting on Monday Common year starting on Wednesday Gregorian calendar Julian calendar Roman numerals Japanese calendar California Penal Code American Indian Wars January 17 Modoc War Amadeo of Spain Cortes Generales February 11 First Spanish Republic Emilio Castelar y Ripoll February 12 February 20 Medical school San Francisco University of California E. Remington and Sons Ilion, New York March 1 Typewriter Censorship Comstock laws March 3 United States Congress March 4 President of the United States Ulysses S. Grant March 15 Phi Sigma Kappa University of Massachusetts March 22 Puerto Rico March 29 Rio Tinto Group April 1 Nova Scotia RMS Atlantic United Kingdom April 15 April 17 Barbed wire Henry Rose Illinois Jacob Haish Joseph Glidden May