books.google.com - In the wake of World War I, the hamburger was still considered a disreputable and undesirable food. Yet by 1930 Americans in every corner of the country accepted the hamburger as a mainstream meal and eventually made it a staple of their diet. The quintessential "American" food, hamburgers have by now...http://books.google.com/books/about/Selling_Em_by_the_Sack.html?id=PT6s4ZbznHMC&utm_source=gb-gplus-shareSelling 'Em by the Sack
