many emigrants on their way to America, but may have contained roasted beefsteak rather than Frikadeller. It has been suggested that Hamburg steak served between two pieces of bread and frequently eaten by Jewish passengers travelling from Hamburg to New York on Hamburg America Line vessels (which began operations in 1847) became so well known that the shipping company gave its name to the dish. Each of these may mark the invention of the hamburger and explain the name. There is a reference to a "Hamburg steak" as early as 1884 in the Boston Journal.[OED, under "steak"] On July 5, 1896, the Chicago Daily Tribune made a highly specific claim regarding a "hamburger sandwich" in an article about a "Sandwich Car": "A distinguished favorite, only five cents, is Hamburger steak sandwich, the meat for which is kept ready in small patties and 'cooked while you wait' on the gasoline range." Claims of invention The origin of the hamburger is unclear, though "hamburger steak sandwiches" have been advertised in U.S. newspapers from New York to Hawaii since at least the 1890s. The invention of hamburgers is commonly attributed to various people, including Charlie Nagreen, Frank and Charles Menches, Oscar Weber Bilby, Fletcher Davis, or Louis Lassen. White Castle traces the origin of the hamburger to Hamburg, Germany, with its invention by Otto Kuase. Some have pointed to a recipe for "Hamburgh sausages" on toasted bread, published in The Art of Cookery Made Plain and Easy by Hannah Glasse in 1747. Hamburgers gained national recognition in the U.S. at the 1904 St. Louis World's Fair when the New York Tribune referred to the hamburger as "the innovation of a food vendor on the pike." No conclusive argument has ended the dispute over invention. An article from ABC News sums up: "One problem is that there is little written history. Another issue is that the spread of the burger happened largely at the World's Fair, from tiny vendors that came and went in an instant. And it is entirely possible that more than one person came up with the idea at the same time in different parts of the country." Louis Lassen Although debunked by The Washington Post, a popular myth recorded by Connecticut Congresswoman Rosa DeLauro stated the first hamburger served in America was by Louis Lassen, a Danish immigrant after he opened Louis' Lunch in New Haven in 1895. Louis' Lunch,