Read the following paragraph and identify the Object of Prepositions:
Mark Twain loved to brag about his hunting and fishing exploits. He once spent three weeks fishing in the Maine woods, regardless of the fact that it was the state's closed season for fishing. Relaxing in the lounge car of the train on his return journey to New York, his catch iced down in the baggage car, he looked for someone to whom he could relate the story of his successful holiday.