In 1881, Glover started to promote the reclamation of the
Potomac mud flats that extended West and South of the
National Mall, and their transformation into a great public park. This idea was met with stubborn opposition from railroad companies which then had facilities on the Mall and wanted to extend them further. The reclamation work started in 1882 under the leadership of
Peter Conover Hains, including the creation of the
Tidal Basin. But the future use of the land was not settled before early 1897, when Glover obtained the passage of a bill establishing
Potomac Park and personally persuaded President
Grover Cleveland to sign it on his last full day in office. This paved the way for the
McMillan Plan a few years later. The
Lincoln Memorial,
Jefferson Memorial,
Franklin Delano Roosevelt Memorial, and many other iconic monuments of Washington, D.C. owe their existence to the creation of Potomac Park. In 1888, Glover became the leading promoter of the creation of
Rock Creek Park. The project of protecting the natural area around
Rock Creek had emerged a generation earlier, but several bills to materialize it had failed in Congress since a first attempt in 1866. Together with other local civic leaders including newspaper publisher
Crosby Stuart Noyes and lawyer
Calderon Carlisle, he successfully lobbied for bills that led to the creation of the
National Zoo in 1889 and Rock Creek Park in 1890. In 1898, Glover was one of the founding members of the
Washington Board of Trade, which quickly became the city's most politically powerful civic organization. Glover made major contributions to the landscape of
Massachusetts Avenue NW. While living at 4300 Massachusetts Avenue, Glover contributed to its development. The construction of the
National Cathedral was launched under Glover's leadership at a meeting in his house on
Lafayette Square in 1891. In 1896, anticipating on the avenue's extension beyond
Rock Creek, he built his country house and estate,
Westover, south of the present
Ward Circle. (Westover was razed and redeveloped in the 1960s.) About a decade later, he moved there permanently and used the avenue for his daily commute downtown. Glover was also a trustee of
American University, and was instrumental in its establishment on its current main campus, immediately northwest of Westover. Fittingly, when a new
bridge was built in the late 1930s to carry Massachusetts Avenue over Rock Creek, it was dedicated with Glover's name. In addition to promoting the creation of parkland through his efforts in Congress, Glover also donated land of his own. In 1924 he gave some 80 acres of land which, together with a smaller gift from oil heiress
Anne Mills Archbold, daughter of
John Dustin Archbold, formed
Glover-Archbold Park. He also donated other tracts of land in the Eastern part of the District of Columbia. In the early 1920s, he also secured funding for the design of
Arlington Memorial Bridge, which was completed a decade later. He was Vice-President and Treasurer of the
Corcoran Gallery. ==Personal life==