Halcyon Park is an unincorporated community that was developed by Reverend Cyrus Kemper Capron in Bloomfield, in Essex County, New Jersey, United States, in 1895 as a planned community of homes with trees and shrubs, picturesque cottages, ponds and common grounds to be maintained by a caretaker and gardener.
 It is believed that Halcyon Park was inspired by Llewellyn Park, the first planned garden suburb about three miles away.
 Capron envisioned a private residential park for individuals of moderate means to offer all the advantages of the city (proximity to two railroads and a trolley for access to Newark and New York City, water, gas sewer and paved streets) and the country (trees, ponds, picturesque landscape).
 The original plan laid out 182 lots and common grounds to include a club house and tennis courts for common use by a lot-owners association.
 The Club House contained a bowling alley, billiard table, library and stage.
 The common grounds included a gate house, a conservatory, and two ponds.
 The land was developed with water, sewer and gas lines and paved streets, innovative at the time.
Charles Edward Huber (c. 1845–1904) was from a well-known family in Los Angeles, California, at the turn of the 19th and 20th centuries and served on the city's governing body, the Common Council, between 1873 and 1875.
 Near the end of his life he was engaged in several court cases and was sent to a state hospital for the mentally ill.
Martin Pascal Hubert Strens (28 March 1807, in Roermond – 22 July 1875, in Maastricht) was a Dutch politician.
The flag of Maastricht (Dutch: "Vlag van Maastricht", Limburgish (Maastrichtian variant): "Veendel vaan Mestreech" or "Drappo vaan Mestreech") is the official flag of Maastricht, the capital city of the province of Limburg, Netherlands.
 It constitutes a red vertical surface with a five-pointed star on its left side (a star that is common among many flags e.g., the flag of Chile).
 It had been a historical flag, with its first image of appearance dating from 1545, of the municipality but was replaced in 1938 with a flag similar in design to the Polish flag.
 To avoid confusion, the old flag was reinstated in 1994.
The Peoria Municipal Band, in Peoria, Illinois was founded officially in 1937, but prior to that the band was a professional municipal band, and is one of the oldest municipal bands in the country.
 The Peoria Municipal Band is funded by the city of Peoria through taxes, which allows hundreds of thousands to enjoy their concerts.
 The band performs from the beginning of June through August on Sunday and Wednesday nights at the Fred Huber Memorial Bandshell (named after the band's director from 1962-1991) in Glen Oak Park Amphitheatre.
 During July, the band moves its Wednesday night concerts to the CEFCU Center Stage on the Peoria Riverfront and also adds several Friday night "out about town" concerts with its "mini-band," a smaller version of the group.
 Memorial Day festivities for the city of Peoria and the Peoria Park District third of July fireworks spectacular also feature the Peoria Municipal Band as an entertainment centerpiece.
Joseph Huber Sr. (died 1867), was president of the Los Angeles, California, Common Council—the legislative arm of that city—for two years, beginning May 1863 and ending May 1865.
 He had earlier terms as a member, winning a seat in a special election on January 7, 1861, to replace Damien Marchesseault, who had resigned, and also serving in the 1862–63 term.
The Land of Ev is a fictional country in the Oz books of L. Frank Baum and his successors.
 Its exact location is unclear between text and maps. "
The Road to Oz" states that Ev is to the north of the Land of Oz, and in "Ozma of Oz", Princess Ozma of Oz and her procession enter the Munchkin Country and meet the King of the Munchkins upon leaving the palace at Evna, the capital city.
 Subsequent books place Ev nearer to the Winkie Country, and the map on the endpapers of "Tik-Tok of Oz" shows the Munchkin Country as having no northern border with the desert that surrounds Oz, as a thin strip of the Gillikin Country extends even farther east than most of the Munchkin Country.
 This map depicts Ev as a small country to the northwest (the compass rose is reversed) of Oz, with the Dominions of the Nome King as a separate area.
 James E. Haff and Dick Martin's map, following the text, place the Nome Kingdom under an Ev that takes up the entire portion allotted to the Nome King's dominions on Baum's map.
Pascal Ballade, also known as P. Ballade, (1839–1904) was a businessperson in Los Angeles, California, and a member of the Los Angeles Common Council, the city's governing body.
The common house martin ("Delichon urbicum"), sometimes called the northern house martin or, particularly in Europe, just house martin, is a migratory passerine bird of the swallow family which breeds in Europe, north Africa and temperate Asia; and winters in sub-Saharan Africa and tropical Asia.
 It feeds on insects which are caught in flight, and it migrates to climates where flying insects are plentiful.
 It has a blue head and upperparts, white rump and pure white underparts, and is found in both open country and near human habitation.
 It is similar in appearance to the two other martin species of the genus "Delichon", which are both endemic to eastern and southern Asia.
 It has two accepted subspecies.
Maastricht (] ; Limburgish : "Mestreech" ; French: "Maestricht" ; Spanish: "Mastrique" ) is a city and a municipality in the southeast of the Netherlands.
 It is the capital and largest city of the province of Limburg, as well as the largest city in the historical duchy of Limburg, that today spans the Netherlands and Belgium.

Question: What country do Martin Pascal Huber Strens and the city of Maastricht have in common?
Answer: Netherlands