Mustard (condiment) mixed with horseradish and dried for storage, which were then exported to London and other parts of the country, and are even mentioned in William Shakespeare's play "King Henry the Fourth, Part II". The use of mustard as a hot dog condiment is said to have been first seen in the US at the 1904 St. Louis World's Fair, when the bright-yellow French's mustard was introduced by the R.T. French Company. Mustard is most often used at the table as a condiment on cold meats.It is also used as an ingredient in mayonnaise, vinaigrette, marinades, and barbecue sauce. It is
St. Louis Public Schools and employed more than 1,600 teachers. By the 20th century, the population in St. Louis was 575,238. Public school enrollment was 62,797, employing 1,665 teachers in ninety schools. Another St. Louis first was the Educational Museum, which featured articles purchased from the 1904 World's Fair Palace of Education. The museum opened in 1905, and in 1943 it evolved into the first audiovisual department in the United States. The public schools continued to grow with the city, opening special open air schools for children at risk for tuberculosis, schools for deaf children and those needing individualized instruction, as well as children