Question: In which state are both the Blackstone Block Historic District and the Quincy Market both located? 

Context paragraphs:
East Spring Street Historic District: The East Spring Street Historic District is a national historic district located at New Albany, Indiana.  The general area is E. Fifth Street to the west, Spring St. to the north, E. Eighth Street to the east, and Market Street to the south.  The Cedar Bough Place Historic District is one block north of the area, the New Albany Downtown Historic District is immediately west of the area, and the Market Street section of the Mansion Row Historic District starts.  The district encompasses 84 contributing buildings in a largely residential section of New Albany.  It developed in the late-19th and early-20th century and includes notable examples of Queen Anne and Italianate style architecture.  Notable buildings include the Third Presbyterian Church (now First Baptist Church, 1853, 1955), St. Mary's Roman Catholic Church and Rectory (1858, 1886), the former John Conner House or Masonic Lodge (c. 1850), and Edwards City Hospital (c. 1890).

Blackstone Block Historic District: The Blackstone Block Historic District encompasses what was once a waterfront business area in Boston, Massachusetts.  Due to the infill of land it is now slightly inland from the waterfront.  The district is bounded by Union, Hanover, Blackstone, and North Streets, not far from Quincy Market and Faneuil Hall.  It includes the Union Oyster House, a National Historic Landmark building erected in the 1710s, and a collection of commercial buildings dating from the late 18th and 19th centuries.  It also includes the c. 1770s Ebenezer Hancock House (10 Marshall Street), a Federal-style wood-frame house that is the only building left in the city which was known to be owned by John Hancock.  The building was declared a Boston Landmark by the Boston Landmarks Commission in 1977 for its notable exterior and interiors.

Mechanics Block Historic District: The Mechanics Block Historic District is a historic district at 107 - 139 Garden St. and 6 - 38 Orchard Street in Lawrence, Massachusetts.  It encompasses two segments of brick rowhouses that are back-to-back.  The rowhouses are 2 1/2 story brick buildings, organized into mirror-image pairs, with a single gable-roof dormer piercing the side-gable roofs for each unit.  They were built in 1847 by the Essex Company (the development arm of the Lawrence mill operators) as worker housing.

Paradise Block Historic District: The Paradise Block Historic District is a nationally recognized historic district located in Oskaloosa, Iowa, United States.  It was listed on the National Register of Historic Places in 1991.  At the time of its nomination it contained 43 resources, which included 26 residences, two churches, 12 garages, two brick driveways, and a vacant lot.  Of these, 35 are considered contributing properties.  The eight non-contributing properties include the vacant lot, two houses and a garage built after 1935, and four otherwise historic houses that have been significantly altered and have lost significant architectural elements.  The contributing properties were built between 1853 and 1917, with 15 of them being built between 1880 and 1900.  Two of the houses, the Smith-Johnson House (1853) and the Seeberger-Loring-Kilburn House (1859), are individually listed on the National Register.  The churches include the First Church of Christ, Scientist (1912), a Neoclassical structure covered with stucco, and St. Paul Congregational United Church of Christ (1914), a Neoclassical brick structure.

Central Woolen Mills District: The Central Woolen Mills District is a historic district in Uxbridge, Massachusetts.  The centerpiece of this historic district is the Stanley Woolen Mill, aka Central Woolen Mill, built by Moses Taft in 1852, and earlier by his father, Luke Taft, in 1833, on the banks of the Blackstone Canal.  The District is also the southern entrance to the Blackstone River and Canal Heritage State Park.  This parkland is the geographic center of the Blackstone River Valley National Heritage Corridor, an historic corridor of national significance as are of the earliest industrial activity of the United States.

Quincy Market: Quincy Market is a historic market complex near Faneuil Hall in downtown Boston, Massachusetts.  It was constructed in 1824–26 and named in honor of Mayor Josiah Quincy, who organized its construction without any tax or debt.  The market is a designated National Historic Landmark and Boston Landmark, significant as one of the largest market complexes built in the United States in the first half of the 19th century.

Blackstone Historic District: Blackstone Historic District is a national historic district located at Blackstone, Nottoway County, Virginia.  It encompasses 272 contributing buildings and 1 contributing structure in the town of Blackstone.  They include residential and commercial structures dating from the late-18th to early-20th centuries.  They include notable examples of the Late Gothic Revival, Queen Anne, and Romanesque styles.  Notable buildings include the former Blackstone College for Girls (1922), First National Bank, Thomas M. Dillard House, Richmond F. Dillard House, Blackstone Public School Complex, Bagley House (1911), Blackstone Baptist Church (1907), Crenshaw United Methodist Church (1903), St. Luke's Episcopal Church (1916), and Blackstone Presbyterian Church (1901).  Located in the district is the separately listed Schwartz Tavern.

Shaw Historic District: Shaw Historic District, also known as Francis B. Shaw Block Historic District, is a national historic district located in Doylestown, Bucks County, Pennsylvania.  The district includes seven contributing buildings in a residential and industrial area of Doylestown.  The block was developed between 1833 and 1914, and includes the Bryan House (c. 1833), Clemens Double House (pre-1874), Goodman House (c. 1835), Kulp House (c. 1849), the Late Victorian-style Rhodes House (1891), Rhodes Livery Stable (1914), and the Doylestown Agricultural Works complex (1867, 1914).  The Doylestown Agricultural Works was rebuilt after a fire in 1913; it closed in 1968.

Wilson Block (Dallas, Texas): The Wilson Block is an historic neighborhood located in east Dallas, Texas.  The Wilson Block was added to the National Register of Historic Places in 1978 because of its Victorian/Queen Anne revival style architecture and historic value as one of the first residential developments in Dallas.  The Wilson Block Historic District comprises 4 single-family dwellings on Swiss Ave., 20 acres, and 6 buildings.  The Wilson Block itself encompasses a city block, 95,000 ft2 , bounded by Swiss Avenue, Floyd, Oak, and Liberty Streets.  It is owned and operated by The Meadows Foundation (Dallas), a private philanthropic institution.

Teoronto Block Historic District: Teoronto Block Historic District is a national historic district located in the Frankfort neighborhood of Rochester in Monroe County, New York.  The district consists of 10 contributing buildings originally built beginning in 1844, with later additions and modifications.  It is reflective of Rochester's early commercial and industrial development as an Erie Canal-oriented boom town.  It includes a block long group of three story, brick commercial buildings, known as the Teoronto-Smith Block.  They consist of nine five bay buildings with a continuous gable roof.  Also in the district is a set of attached commercial / industrial buildings.

Supporting paragraphs: Blackstone Block Historic District Quincy Market
Answer: Massachusetts