Final answer:
Uncle Oelbermann's wedding present of a lottery ticket to Harmony brought bad luck, resulting in a series of tragic events in the novel 'McTeague' by Frank Norris.
Step-by-step explanation:
The wedding present that brought bad luck to Harmony in Frank Norris's novel, 'McTeague', was a gift from Uncle Oelbermann. Although it is not explicitly mentioned in the provided excerpt, further reading reveals that Uncle Oelbermann's gift was a lottery ticket that eventually caused much strife and tragedy. In the narrative, presents such as the ice-water set, a carving knife and fork, a painted view of the Golden Gate, and a chatelaine watch of German silver are mentioned, but none of these bring the misfortune that the lottery ticket does. The tale unfolds with Uncle Oelbermann's seemingly innocuous gift leading to a series of events that disrupt the lives of the characters, particularly Trina and McTeague.