Question: B&H most commonly refers to which organization, founded in 1973, and the largest photo and video equipment store in the United States?
Context: B&H most commonly refers to B&H Photo Video, the largest photo and video equipment store in the United States. "Sally" is the pilot episode of the American television sitcom "Flight of the Conchords".  It first aired on HBO on June 17, 2007.  In this episode, New Zealanders Jemaine Clement and Bret McKenzie of the band Flight of the Conchords have moved to New York City to try to make it in the United States.  At a party, Jemaine falls for, and subsequently begins dating, Sally—Bret's former girlfriend.  As Jemaine's attentions focus on Sally, a lonely Bret is forced to deal with the advances of Mel (Kristen Schaal), the band's obsessed—and only—fan.  Meanwhile, Murray (Rhys Darby), the band's manager, helps the band film their first music video, although they cannot afford decent costumes or proper video equipment. Dead Moon was an American punk rock band from 1987 to 2006, formed in Portland, Oregon, United States.  Fronted by singer/guitarist Fred Cole, the band also included bassist Kathleen "Toody" Cole, Fred's wife, and drummer Andrew Loomis.  Veterans of Portland's independent rock scene, Dead Moon combined dark and lovelorn themes with punk and country music influences into a stripped-down sound.  Fred Cole engineered most of the band's recordings and mastered them on a mono lathe that was used for The Kingsmen's version of "Louie Louie".  Their early records, such as "In the Graveyard," were released on the Tombstone Records label, named for the musical equipment store Fred and Toody operated at the time.  Soon they caught the attention of the German label Music Maniac Records, and toured Europe successfully.  Not until the mid-nineties did they tour the United States.  Much of their following was in Europe. Ward-Beck Systems "commonly referred to as Ward-Beck or simply WBS", is a Canadian manufacture of broadcast audio and video equipment.  It was founded in a garage in April 1967 by Ron W. Ward and director of engineering, Rodger K. Beck. Encore Data Products is a privately held American manufacturer and supplier of high end audio and video equipment including headphones, amplifiers, digital signal processors and computer control systems.  The company was founded in 2006 and currently headquartered in Lafayette, Colorado.  It is one of the largest manufacturers and supplier of audio and video components in Colorado. AP Sound Inc. is one of the United States' largest commercial installers of audio and video equipment for musicians, recording studios, schools, stadiums, houses of worship, concert sound companies, and broadcasters.  All Pro Sound also sells recording systems, keyboards, guitars, drums, microphones, mixers, loudspeakers, signal processors, and other equipment. Greater Mexico City refers to the conurbation around Mexico City, officially called Valley of Mexico Metropolitan Area ("Zona Metropolitana del Valle de México"), constituted by Mexico City itself composed of 16 Municipalities—and 41 adjacent municipalities of the states of Mexico and Hidalgo.  For normative purposes, however, Greater Mexico City most commonly refers to the Metropolitan Area of the Valley of Mexico ("Zona Metropolitana del Valle de México") an agglomeration that incorporates 18 additional municipalities.  As of 2010 Census, Greater Mexico City had a population just over 20 million, making it the largest metropolitan area in North America just ahead of the New York metropolitan area.  But as of a 2014 census, it's estimated the population of Greater Mexico City was 25.4 million people, making it the largest urban agglomeration in the western hemisphere.  It is surrounded by thin strips of highlands which separate it from other adjacent metropolitan areas, of which the biggest are Puebla, Toluca, and Cuernavaca-Cuautla, and together with which it makes up the Mexico City megalopolis. A jog dial, jog wheel, shuttle dial, or shuttle wheel is a type of knob, ring, wheel, or dial which allows the user to shuttle or jog through audio or video media.  It is commonly found on models of CD players which are made for disc jockeys, and on professional video equipment such as video tape recorders.  More recently, they are found on handheld PDAs, and as the scroll wheel on computer mice.  "Jog" refers to going at a very slow speed, whereas "shuttle" refers to a very fast speed. B&H Photo Video, founded in 1973 and located at 420 Ninth Avenue on the corner of West 34th Street in Manhattan, New York City, is the largest non-chain photo and video equipment store in the United States. Walter "Gunzo" Humeniuk (June 21, 1929 – 1987) was a trainer and backup goaltender for the Detroit Red Wings and the Chicago Black Hawks of the NHL for much of the 1950s and 1960s, although he was never officially listed as a player.  He spent 1948 to 1955 with the Detroit Red Wings.  He went to the Chicago Black Hawks in 1955.  It is commonly reported that he was "traded" from Detroit to Chicago, but most likely he was brought over as an assistant trainer/equipment manager by General Manager Tommy Ivan, who had left the Red Wings in 1954 to take over the Blackhawks.  From 1955 to 1961, Humeniuk was the Blackhawks' backup goaltender and assistant trainer.  He would win 2 Stanley Cup Championships in his Career with Detroit in 1950 and Chicago in 1961.  He remained with the Blackhawks organization until 1963.  He would later open a hockey equipment store in suburban Berwyn, which burned in 1970, then re-opened in River Forest, Illinois.  He was elected to the Illinois Hockey Hall of Fame in 2005.
Answer: B&H Photo Video