Question: What years was the mansion built on what later became Roslyn Air National Guard Station built?

<P0-S0>  It was designed by McKim, Mead, and White, with Stanford White supervising the project. <P0-S1> Harbor Hill was a large Long Island mansion built from 1899-1902 in Roslyn, New York, commissioned by Clarence Hungerford Mackay. <P0-S2>  It was the largest home he ever designed. <P0-S3>  <SEP> <P1-S0> Maj. Gen. George G. Finch became the Senior Leader of the US Air National Guard; (Chief of the Air Division National Guard Bureau) (1948-1950) In June 1953 it was reported that Gen. Mark W. Clark would retire and be replaced by Maj. Gen George G. Finch on the UN command delegation to the Korean armistice talks George G. Finch, born April 11, 1902 in Dade City, Florida, is considered one of the pioneers in United States aviation history. <P1-S1>  He began his military career during World War 1, enlisting in the Aviation Section of the Army's Signal Corps in 1918. <P1-S2>  He remained in the Reserve Corps after the war, and in 1926, became Commander, 27th Pursuit Squadron, 1st Pursuit Group. <P1-S3>  In 1940, Georgia Governor Ed Rivers commissioned him to form the first flying unit of the Georgia Air National Guard. <P1-S4>  The unit was mobilized into the U.S. Army in September, 1941, with Major Finch as commander. <P1-S5>  After World War II, he was a leading critic of efforts to eliminate the air arm of the National Guard during peacetime. <P1-S6>  General Finch gained the respect and admiration of Air National Guardsmen throughout the nation with his steadfast support and successful efforts to preserve the Air Guard. <P1-S7>  He became the first Chief of the Air Force Division of the National Guard Bureau in 1948. <P1-S8>  Under his leadership, the Air National Guard built to combat readiness and was among the first components called into service after the outbreak of the Korean War. <P1-S9>  As a result of General Finch's vision and perseverance, 45,000 highly trained officers and airmen of 22 wings and 65 squadrons gave the Air Force the strength it needed in the early, critical phases of the Communist drive down the Korean peninsula.General Finch served as the senior Air Force member of the United Nations negotiating team at the peace talks at Panmunjom, Korea, and received the Legion of Merit for outstanding service in 1955; General Finch assumed command of Fourteenth Air Force, Robins AFB, Georgia, becoming the nation's first Air National Guardsman to head a numbered air force. <P1-S10>  General Finch had a career of "firsts" including the US Army's first night landing with a single, five-million-candlepower floodlight in 1927. <P1-S11>  He also established and endowed the General John P. McConnell Award at the United States Air Force Academy. <P1-S12>  Considered by many as the father of the strong, independent Air National Guard existing today, General Finch retired in 1957. <P1-S13>  No man has had greater impact on the Air Force Reserve and National Guard than has General George G. Finch.A graduate of the University of Georgia and a member of the Georgia Bar, General Finch was enshrined in the Georgia Aviation Hall of Fame May 18, 1996. <SEP> <P2-S0> Maj Gen Paul A. Weaver Jr. (born 19?? <P2-S1>  - ) was the director of the Air National Guard from 28 January 1998 to 3 December 2001. <P2-S2>  His pilot career started in 1967 as an F-4E pilot in West Germany. <P2-S3>  He also served, at Osan Air Base, South Korea, and the Republic of Korea Tiger Division, Camp Red Cloud, Korea. <P2-S4>  He served as the air commander for the New York Air National Guard, and was responsible for the largest conversion in the history of the Air National Guard, at 105th Airlift Group, Stewart Air National Guard Base, New York. <P2-S5>  Under his command, the 105th Airlift Group converted from the Air Force's smallest aircraft, the 0-2 Skymaster, to the largest aircraft, the Lockheed C-5 Galaxy. <P2-S6>  He also oversaw the largest military construction project in the history of the Reserve Forces, the construction of Stewart Air National Guard Base. <SEP> <P3-S0> Roslyn Air National Guard Station (ADC ID: P-3) is a closed United States Air Force station. <P3-S1>  It is located 1 mi south of East Hills, New York on Long Island. <P3-S2>  It was originally part of Clarence MacKay's Harbor Hill estate. <P3-S3>  It was closed in 2000.