Question: What is the name given to a number of elongated iron-ore mining districts around Lake Superior whose cities are known for their architecturally distinctive residences?

Context paragraphs:
Bayfield Peninsula: The Bayfield Peninsula is a peninsula on Lake Superior.  It is located in Bayfield County, Wisconsin USA.  It is the northernmost region of mainland Wisconsin, with the south shore of Lake Superior to the west and the Chequamegon Bay to the east.  The peninsula is part of the Lake Superior Lowland, though the interior southeast of Cornucopia and west of Bayfield has some higher ground including Pratt's Peak, Bayfield County's second-highest point.  Highway 13 runs around the peninsula along the Superior shoreline.  The communities of Port Wing, Herbster, Cornucopia, Red Cliff, Bayfield, Washburn, and Ashland lie on this stretch of highway.  The interior of the peninsula is mostly the northern end of the Chequamegon National Forest, an area of jackpine growth known as the Moquah Barrens.  The Apostle Islands surround the end of the peninsula.

Lake Superior Chippewa: The Lake Superior Chippewa (Anishinaabe: Gichigamiwininiwag) were a large historical band of Ojibwe (Anishinaabe) Indians living around Lake Superior; this territory is considered part of northern Michigan, Wisconsin, and Minnesota in the United States.  They migrated into the area by the seventeenth century, encroaching on the Eastern Dakota people who historically occupied the area.  The Ojibwe defeated the Eastern Dakota and had their last battle in 1745, after which the Dakota Sioux migrated west into the Great Plains.  While sharing a common culture and Anishinaabe language, this group of Ojibwe was highly decentralized, with at least twelve independent bands in this region.

Superior Shoal: The Superior Shoal is a geologic shoal of approximately 20 sqmi located 50 mi north of Copper Harbor, Michigan in the middle of Lake Superior whose highest point lies only 21 ft below the lake's surface.  The shoal is a hump of Keweenawan basaltic lava flows with ophitic interiors and amygdaloidal tops in an otherwise deep part of the lake, and though fishermen had known of its existence for generations it was only officially charted in 1929.  It has been theorized that the World War I French minesweepers "Inkerman" and "Cerisoles", which disappeared during their maiden voyage on Lake Superior in mid-November 1918, may have run aground on this shoal and some have theorized that it may have been to blame for both the disappearance of the "Flying Dutchman of the Great Lakes" on November 21, 1902 and the sinking of the "Titanic of the Great Lakes" on November 10, 1975 (the "SS Bannockburn" and SS "Edmund Fitzgerald", respectively).  It is one of the known off-shore spawning and foraging habitats for the juvenile lean lake trout.

Milford Mine: The Milford Mine was an underground mine in Wolford Township, Minnesota, United States.  On February 5, 1924, it was the site of the Milford Mine Disaster, the worst mining accident in Minnesota history, during which it was flooded by water from a nearby lake, killing 41 miners, while only seven men were able to climb to safety.  Starting in 2010 the site has been under development by Crow Wing County as Milford Mine Memorial Park.  The property was listed as the Milford Mine Historic District on the National Register of Historic Places in 2011 for having state-level significance in the themes of industry and historical archaeology.  It was nominated for its association with a significant event in Minnesota history, and for potential archaeological resources that could illuminate mining technology, the rise and fall of iron-ore mining on the Cuyuna Range, and the daily lives of its workers.

Whitefish Point Light: The Whitefish Point Light, a lighthouse in the Upper Peninsula of Michigan, is the oldest operating light on Lake Superior.  It is arguably the most important light on Lake Superior.  All vessels entering and leaving Lake Superior must pass the light.  It stands on the treacherous southern shoreline of Lake Superior known as the "Graveyard of the Great Lakes" in an area with more shipwrecks than any other area of the lake.

Patrick Casey House: The Patrick Casey House is a historic house in Aitkin, Minnesota, United States.  It was built in 1901 in a mix of Queen Anne and Neoclassical styles.  Original owner Patrick Casey (1849–1910) was a partner in the Potter/Casey Company, the region's leading retail chain.  The house was listed on the National Register of Historic Places in 1982 for having local significance in the themes of architecture and commerce.  It was nominated for its association with one of Aitkin's most prominent businessmen at the turn of the 20th century, and for being one of northern Minnesota's few architecturally distinctive residences outside of Duluth and the Iron Range cities.

Iron Range: Iron Range refers collectively or individually to a number of elongated iron-ore mining districts around Lake Superior in the United States and Canada.  Despite the word "range," the iron ranges are not mountain chains, but outcrops of Precambrian sedimentary formations containing high percentages of iron.  These cherty iron ore deposits are Precambrian in age for the Vermilion Range, while middle Precambrian in age for the Mesabi and Cuyuna Ranges, all in Minnesota.  Similarly, the Gogebic Range in Wisconsin and the Marquette Iron Range and Menominee Range in Michigan.  Natural ores and concentrates were produced from 1848 until the mid 1950s, when taconites and jaspers were concentrated and pelletized started to become the major source of iron production.

Hancock Park, Los Angeles: Hancock Park is a historic and affluent residential neighborhood in the central region of the City of Los Angeles, California.  It is built around the grounds of a private golf club.  Developed in the 1920s, the neighborhood features architecturally distinctive residences.

Western Great Lakes forests: The Western Great Lakes forests, in large part, lie in the northwestern Great Lakes Basin near the shores of Lake Huron, Lake Michigan and Lake Superior, including the entire Upper peninsula of Michigan and large parts of Northern Wisconsin, around Lake Superior into much of northern Minnesota and a smaller section into Canada.  In the west, the ecoregion surrounds the lakes and rivers that divide Minnesota from Ontario, including Lake of the woods and Rainy River, and it extends near the Winnipeg River into southeastern Manitoba

Jackson Mine: The Jackson Mine is an open pit iron mine in Negaunee, Michigan, extracting resources from the Marquette Iron Range.  The first iron mine in the Lake Superior region, Jackson Mine was designated as a Michigan State Historic Site in 1956 and listed on the National Register of Historic Places in 1971.  The Lake Superior Mining Institute said, the mine "is attractive in the iron ore region of Michigan and the entire Lake Superior region, because of the fact it was here that the first discovery of iron ore was made, here the first mining was done, and from its ore the first iron was manufactured."  Multiple other mines soon followed the Jackson's lead, establishing the foundation of the economy of the entire region.  The mine is located northwest of intersection of Business M-28 and Cornish Town Road.

Supporting paragraphs: Patrick Casey House Iron Range
Answer: Iron Range