approximately 80 covers on various exhibit pages and dealer cards, largely telling the story of the escalating postal tensions between the United States and Great Britain from the Discriminatory Period, the Retaliatory Period, the Restored Rates, and the Treaty Period, impossible to mention everything but we note August 16, 1848 England to New York by Ocean's Washington franked with strip of three GB 2p Blue; December 2, 1848 Liverpool to Boston by Cunard's Niagara on penultimate westbound retaliatory rate voyage; January 3, 1849 folded letter Constantinople to Philadelphia via Liverpool (by Cunard's Niagara); February 13, 1849 Tarboro, North Carolina to Scotland via Boston and Liverpool, carried on first Treaty Rate voyage of Cunard's Niagara; March 22, 1849 Le Havre to Portland, Maine by Hermann on her first Treaty Rate voyage (ex-White); and August 12, 1849 Baltimore to Amsterdam by Cambria (ex-Winter); although not entirely organized this group presents a wonderful opportunity to learn about this fascinating period of Anglo-American relations and the development of fast and reliable transatlantic mail, a useful group worth a close inspection