Archaeologists in Arizona have unearthed a bronze cannon linked to the 16th-century expedition of Francisco Vázquez de Coronado, marking the oldest firearm ever found in the continental United States. The cannon, a sand-cast bronze piece measuring 42 inches long and weighing approximately 40 pounds, was discovered at the site of a Spanish stone-and-adobe structure in … Continue reading Oldest US firearm discovered in Arizona: a 500-year-old relic of Coronado’s expedition