Sandy, thanks for your dedication here. I was able to create a column under the field Select containing all the dates from 1860 onward. When the Query was invoked, some of the webpages reported an error becsue they don't exist, notably for the war years like 1917 and 1943. I then altered the M-code to reflect each of the four tournaments and to report the Dates only. As you noticed for the US_Open, there were years for each tournament when the Query stopped working and needed to have its columns adjusted. After these tinkerings, the Query reported a long column of Dates for each tournament and I now have 448 dates for the four major tournaments.
Dealing with these dates is the new challenge. Here is a sample of my output. I will need to somehow create a start date and an end date for each tournament, which won't be easy because they are all laid out differently across and within each field.
[TABLE="width: 751"]
[TR]
[TD]open[/TD]
[TD]usopen[/TD]
[TD]pga[/TD]
[TD]masters[/TD]
[/TR]
[TR]
[TD]17 October 1860[/TD]
[TD]October 4, 1895[/TD]
[TD]October 10–14, 1916[/TD]
[TD]March 22–25, 1934[/TD]
[/TR]
[TR]
[TD]26 September 1861[/TD]
[TD]July 18, 1896[/TD]
[TD]September 16–20, 1919[/TD]
[TD]April 4–8, 1935[/TD]
[/TR]
[TR]
[TD]11 September 1862[/TD]
[TD]September 17, 1897[/TD]
[TD]August 17–21, 1920[/TD]
[TD]April 3–6, 1936[/TD]
[/TR]
[TR]
[TD]18 September 1863[/TD]
[TD]June 17–18, 1898[/TD]
[TD]August 14–18, 1922[/TD]
[TD]April 1–4, 1937[/TD]
[/TR]
[TR]
[TD]16 September 1864[/TD]
[TD]September 14–15, 1899[/TD]
[TD]September 24–29, 1923[/TD]
[TD]April 2–4, 1938[/TD]
[/TR]
[TR]
[TD]14 September 1865[/TD]
[TD]October 4–5, 1900[/TD]
[TD]September 15–20, 1924[/TD]
[TD]March 31 – April 2, 1939[/TD]
[/TR]
[TR]
[TD]13 September 1866[/TD]
[TD]June 14–17, 1901[/TD]
[TD]September 21–26, 1925[/TD]
[TD]April 4–7, 1940[/TD]
[/TR]
[TR]
[TD]26 September 1867[/TD]
[TD]October 10–11, 1902[/TD]
[TD]September 20–25, 1926[/TD]
[TD]April 3–6, 1941[/TD]
[/TR]
[TR]
[TD]23 September 1868[/TD]
[TD]June 26–29, 1903[/TD]
[TD]October 31 –
November 5, 1927[/TD]
[TD]April 9–13, 1942[/TD]
[/TR]
[TR]
[TD]16 September 1869[/TD]
[TD]July 8–9, 1904[/TD]
[TD]October 1–6, 1928[/TD]
[TD]April 4–7, 1946[/TD]
[/TR]
[TR]
[TD]15 September 1870[/TD]
[TD]September 21–22, 1905[/TD]
[TD]December 2–7, 1929[/TD]
[TD]April 3–6, 1947[/TD]
[/TR]
[TR]
[TD]13 September 1872[/TD]
[TD]June 28–29, 1906[/TD]
[TD]September 8–13, 1930[/TD]
[TD]April 8–11, 1948[/TD]
[/TR]
[TR]
[TD]4 October 1873[/TD]
[TD]June 20–21, 1907[/TD]
[TD]September 14–19, 1931[/TD]
[TD]April 7–10, 1949[/TD]
[/TR]
[TR]
[TD]10 April 1874[/TD]
[TD]August 27–29, 1908[/TD]
[TD]August 30 –
September 4, 1932[/TD]
[TD]April 6–9, 1950[/TD]
[/TR]
[TR]
[TD]10 September 1875[/TD]
[TD]June 24–25, 1909[/TD]
[TD]August 8–13, 1933[/TD]
[TD]April 5–8, 1951[/TD]
[/TR]
[TR]
[TD]30 September, 2 October 1876[/TD]
[TD]June 17–20, 1910[/TD]
[TD]July 24–29, 1934[/TD]
[TD]April 3–6, 1952[/TD]
[/TR]
[TR]
[TD]6 April 1877[/TD]
[TD]June 23–26, 1911[/TD]
[TD]October 17–23, 1935[/TD]
[TD]April 9–12, 1953[/TD]
[/TR]
[TR]
[TD]4 October 1878[/TD]
[TD]August 1–2, 1912[/TD]
[TD]May 24–30, 1937[/TD]
[TD]April 8–12, 1954[/TD]
[/TR]
[TR]
[TD]27, 29 September 1879[/TD]
[TD]September 18–20, 1913[/TD]
[TD]July 10–16, 1938[/TD]
[TD]April 7–10, 1955[/TD]
[/TR]
[TR]
[TD]9 April 1880[/TD]
[TD]August 20–21, 1914[/TD]
[TD]July 9–15, 1939[/TD]
[TD]April 5–8, 1956[/TD]
[/TR]
[/TABLE]