Christmas trees are big business in NYC. Running a tree lot takes grit and experience, and even then, it's a tough network to break into. All of the lots in the city are divided into separate territories, owned by only a handful of entrepreneurs.

We spent the day working for NYC's busiest Christmas tree seller on Greg Walsh's busiest day of the year to better understand the wild logistics behind NYC’s Christmas tree economy and the tumultuous history of running a lot in this city.

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