Spencer Tracy won his first Best Actor Oscar for which 1937 seafaring adventure?

"It's me, Bilbo Baggins, companion of Thorin!" is a line from which 1937 novel? In which 1937 novel does Lennie ask George to "tell me, like you done before" about the rabbits? Which 1937 film includes the line "Magic mirror on the wall, who is the fairest one of all"? Which Mexican painter, known for her self-portraits, was twice married to muralist Diego Rivera? Which 1938 Daphne du Maurier novel is narrated by the unnamed second Mrs. de Winter? Who won the 1938 Nobel Prize in Literature "for her rich and truly epic descriptions of peasant life in China"? Which 1938 swashbuckler includes the greeting "Welcome to Sherwood, my lady"? Spencer Tracy won his second straight Best Actor Oscar playing Father Flanagan in which 1938 drama?