Historians agree that the very first dollar sign actually was actually a typo made by a Mr. Oliver Pollock. Pollock was a trader that worked in the United States and traveled around the West Indies, and in the Revolutionary War, he contributed supplies to the effort while living in New Orleans. The Spanish Empire had an outpost there, and in his business dealings with the Spaniards, he used their money, called pesos. In his attempt at abbreviating the word ‘pesos,’ his poor penmanship accidentally created something close to the dollar sign we see today. The symbol was first appropriated by a government official named Robert Morris, and the practice quickly spread thereafter.