Answer the question at the end by quoting:

Vladimir Vladimirovich Nabokov (; Russian: Vladimir Vladimirovich Nabokov, pronounced [vla'djimjIr na'bok@f] ( listen), also known by the pen name Vladimir Sirin; 22 April [O.S. 10 April] 1899 - 2 July 1977) was a Russian-American novelist, translator and entomologist.
Nabokov's interest in entomology had been inspired by books of Maria Sibylla Merian he had found in the attic of his family's country home in Vyra. Throughout an extensive career of collecting he never learned to drive a car, and he depended on his wife Vera to take him to collecting sites. During the 1940s, as a research fellow in zoology, he was responsible for organizing the butterfly collection of the Museum of Comparative Zoology at Harvard University. His writings in this area were highly technical. This, combined with his specialty in the relatively unspectacular tribe Polyommatini of the family Lycaenidae, has left this facet of his life little explored by most admirers of his literary works. He described the Karner blue. The genus Nabokovia was named after him in honor of this work, as were a number of butterfly and moth species (e.g. many species in the genera Madeleinea and Pseudolucia bear epithets alluding to Nabokov or names from his novels). In 1967, Nabokov commented: "The pleasures and rewards of literary inspiration are nothing beside the rapture of discovering a new organ under the microscope or an undescribed species on a mountainside in Iran or Peru. It is not improbable that had there been no revolution in Russia, I would have devoted myself entirely to lepidopterology and never written any novels at all."  The palaeontologist and essayist Stephen Jay Gould discussed Nabokov's lepidoptery in his essay, "No Science Without Fancy, No Art Without Facts: The Lepidoptery of Vladimir Nabokov" (reprinted in I Have Landed). Gould notes that Nabokov was occasionally a scientific "stick-in-the-mud". For example, Nabokov never accepted that genetics or the counting of chromosomes could be a valid way to distinguish species of insects, and relied on the traditional (for lepidopterists) microscopic comparison of their genitalia.  The Harvard Museum of Natural History, which now contains the Museum of Comparative Zoology, still possesses Nabokov's "genitalia cabinet", where the author stored his collection of male blue butterfly genitalia. "Nabokov was a serious taxonomist," says museum staff writer Nancy Pick, author of The Rarest of the Rare: Stories Behind the Treasures at the Harvard Museum of Natural History. "He actually did quite a good job at distinguishing species that you would not think were different--by looking at their genitalia under a microscope six hours a day, seven days a week, until his eyesight was permanently impaired." The rest of his collection, about 4,300 specimens, was given to the Lausanne's Museum of Zoology in Switzerland.  Though his work was not taken seriously by professional lepidopterists during his life, new genetic research supports Nabokov's hypothesis that a group of butterfly species, called the Polyommatus blues, came to the New World over the Bering Strait in five waves, eventually reaching Chile.  Many of Nabokov's fans have tried to ascribe literary value to his scientific papers, Gould notes. Conversely, others have claimed that his scientific work enriched his literary output. Gould advocates a third view, holding that the other two positions are examples of the post hoc ergo propter hoc fallacy. Rather than assuming that either side of Nabokov's work caused or stimulated the other, Gould proposes that both stemmed from Nabokov's love of detail, contemplation, and symmetry.

What happened with his research/discoveries?

Though his work was not taken seriously by professional lepidopterists during his life, new genetic research supports Nabokov's hypothesis



Answer the question at the end by quoting:

The Nitty Gritty Dirt Band, an American country rock band, has existed in various forms since its founding in Long Beach, California in 1966. The group's membership has had at least a dozen changes over the years, including a period from 1976 to 1981 when the band performed and recorded as the Dirt Band. Constant members since the early times are singer-guitarist Jeff Hanna and drummer Jimmie Fadden. Multi-instrumentalist John McEuen was with the band from 1966 to 1986 and returned during 2001 departing once again in November 2017.
The Nitty Gritty Dirt Band was founded around 1966 in Long Beach, California by singer-guitarist Jeff Hanna and singer-songwriter guitarist Bruce Kunkel who had performed as the New Coast Two and later the Illegitimate Jug Band. Trying, in the words of the band's website, to "figure out how not to have to work for a living," Hanna and Kunkel joined informal jam sessions at McCabe's Guitar Shop in Long Beach. There they met a few other musicians: guitarist/washtub bassist Ralph Barr, guitarist-clarinetist Les Thompson, harmonicist and jug player Jimmie Fadden, and guitarist-vocalist Jackson Browne. As Nitty Gritty Dirt Band, the six men started as a jug band and adopted the burgeoning southern California folk rock musical style, playing in local clubs while wearing pinstripe suits and cowboy boots. Their first paying performance was at the Golden Bear in Huntington Beach, California.  Browne was in the band for only a few months before he left to concentrate on a solo career as a singer-songwriter. He was replaced by John McEuen on banjo, fiddle, mandolin, and steel guitar. McEuen's older brother, William, was the group's manager, and he helped the band get signed with Liberty Records, which released the group's debut album, The Nitty Gritty Dirt Band during 1967. The band's first single, "Buy for Me the Rain," was a Top 40 success, and the band gained exposure on The Tonight Show Starring Johnny Carson, as well as concerts with such disparate artists as Jack Benny and The Doors.  A second album, Ricochet, was released later during the year and was less successful than their first. Kunkel wanted the band to "go electric", and include more original material. Bruce left the group to form WordSalad and Of The People. He was replaced by multi-instrumentalist Chris Darrow.  By 1968, the band adopted electrical instruments anyway, and added drums. The first electric album, Rare Junk, was a commercial failure, as was their next, Alive.  The band continued to gain publicity, mainly as a novelty act, making an appearance in the 1968 film, For Singles Only, and a cameo appearance in the 1969 musical western film, Paint Your Wagon, performing "Hand Me Down That Can o' Beans". The band also played Carnegie Hall as an opening act for Bill Cosby and played in a jam session with Dizzy Gillespie.

Who was one of the band members?
singer-guitarist Jeff Hanna