This is a rare piece of history from December 1865, a letter from the Third Avenue Railroad Company in New York City addressed to the Mayor. The letter pertains to the transportation system in the city at the time and provides insight into the workings of the company during that era. It is a great addition to any collection of vintage paper ephemera, transportation memorabilia, or railroadiana and trains. 

 The letter is written on high-quality paper and has been well-preserved over the years. It contains valuable information that is sure to be of interest to collectors and historians alike. This item is perfect for anyone looking to add a unique and historically significant piece to their collection.