1840s guidebooks led emigrants from Independence, Missouri, to Oregon's Willamette Valley along which trail?

Which 1831 novel tells of a cathedral bell ringer who falls for a Romani girl? "O.T.", an 1836 Danish novel for adults, was written by which author who was soon famous for fairy tales? Complete the title of Longfellow's poem: "The Village ___". Which 1840 memoir by Richard Henry Dana became one of the most popular accounts of life at sea? In which 1841 novel, the last of Cooper's Leatherstocking Tales, is Natty Bumppo a young man? Which pair's nicknames included "Tippecanoe" and "His Accidency" in 1841? Complete the title of Robert Browning's 1842 dramatic monologue: "My Last ___". Complete the title of Edgar Allan Poe's tale: "___ and the Pendulum".