Question: Of the two, 56 Leonard Street and Latting Observatory, which was known as a wooden tower in New York City?
Context: Leonard Street is a street in the TriBeCa neighborhood in Lower Manhattan, New York City. So's Your Old Man is a 1926 silent film comedy film directed by Gregory La Cava and starring W.C. Fields and Alice Joyce.  It was written by J. Clarkson Miller based on the story "Mr. Bisbee's Princess" by Julian Leonard Street as adapted by Howard Emmett Rogers.  It was filmed at Astoria Studios in Queens, New York City. The Appleton Building occupied the front of a small block which was bounded by Broadway (Manhattan), Leonard Street, and Catharine Alley in New York City.  It stood at 346 and 348 Broadway, was four stories tall, and was constructed entirely of brown stone.  It was a familiar landmark in a quickly changing Broadway of the mid-19th century.  It was one of Broadway's oldest buildings. The Kitchen, Montross & Wilcox Store at 85 Leonard Street between Broadway and Church Street in the TriBeCa neighborhood of Manhattan, New York City was built in 1861 in the Italianate style for a company which dealt in dry goods.  The cast iron for the building's facade came from James Bogardus' ironworks, one of the few surviving buildings for which that is the case.  The building's columns are referred to as "sperm-candle style" from their resemblance to candles made from spermaceti. 56 Leonard Street is an 821 ft tall, 57-story skyscraper on Leonard Street in Tribeca, New York City, United States.  Herzog & de Meuron describes the building as "houses stacked in the sky."  It is the tallest structure in Tribeca. The Latting Observatory was a wooden tower in New York City built as part of the 1853 Exhibition of the Industry of All Nations, adjoining the New York Crystal Palace.  It was located on the North side of 42nd Street between Fifth Avenue and Sixth Avenue across the street from the site of present-day Bryant Park.  Conceived by Waring Latting and designed by architect William Naugle, the observatory was an octagonally-based, iron-braced wooden tower 315 ft high adjoining the Crystal Palace, with landings at three levels on the structure, allowing visitors to see into Queens, Staten Island and New Jersey.  The tower, taller than the spire of Trinity Church at 290 ft , was the tallest structure in New York City from the time it was constructed in 1853 until it burned down in 1856.  The tower's base was a 75-foot square, tapering to a top of six to eight feet.  It could handle up to 1,500 people at a time. E. W. Holbrook & Company was a New York City dry goods firm which became bankrupt in July 1883.  Located at 51 Leonard Street, near Broadway (Manhattan), in Lower Manhattan, the business was among the most well-known of its kind.  The company, led by Edwin W. Holbrook and three other directors, was in debt in the amount of $750,000 The failure was attributed to losses involved in the operation of its three cotton mills.  Holbrook also lost $500,000 on Wall Street (Manhattan) in speculation.  During the week of E.W. Holbrook & Company's insolvency, 162 Aeolian Hall was a concert hall in midtown Manhattan in New York City, located on the third floor of 29-33 West 42nd Street (also 34 West 43rd Street, from the other side) across the street from Bryant Park.  The Aeolian Building was built in 1912 for the Aeolian Company, which manufactured pianos. Located on the site of the former Latting Tower, which during the 19th century was a popular observatory, the 18-story building contained the 1,100-seat Aeolian Hall.  The building stands next to the Grace Building. The Former New York Life Insurance Company Building, also known as the Clock Tower Building, was built as an office building located at 346 Broadway (with a secondary address of 108 Leonard Street) between Catherine Lane and Leonard Street, in Manhattan, New York City.  Constructed in two stages, from 1868 to 1870 and from 1894 to 1899, it is a New York City Landmark and is listed on the U.S. National Register of Historic Places. Varick Street runs north-south primarily in the Hudson Square district of Lower Manhattan in New York City.  Varick Street's northern terminus is in the West Village, where it is a continuation of Seventh Avenue South south of Clarkson Street.  It continues downtown through Hudson Square and TriBeCa until it reaches Leonard Street, where it merges with West Broadway.  Motor traffic is one-way southbound.  Major east-west streets crossed include Houston Street and Canal Street.  Approaching Broome Street, the two rightmost lanes of Varick Street are reserved for traffic entering the Holland Tunnel, where backups often occur at rush hour.
Answer: Latting Observatory