Question: Which religious denomination was Amy Bess Miller concerned with preserving as a trustee of the Shaker Museum and Library?

Context paragraphs:
Enfield Shaker Museum: The Enfield Shaker Museum is an outdoor history museum and historic district in Enfield, New Hampshire in the United States.  It is dedicated to preserving and sharing the history of the Shakers, a Protestant religious denomination, who lived on the site from 1793 to 1923.  The museum features exhibitions, artifacts, eight Shaker buildings and restored Shaker gardens.  It is located in a valley between Mount Assurance and Mascoma Lake in Enfield.

Religion in Scotland: Religion in Scotland includes all forms of religious organisation and practice.  Christianity is the largest faith in Scotland.  In the 2011 census, 53.8% of the Scottish population identified as Christian (declining from 65.1% in 2001) when asked: "What religion, religious denomination or body do you belong to?" .  The Church of Scotland, a Presbyterian denomination often known as The Kirk, is recognised in law as the national church of Scotland.  It is not an established church and is independent of state control.  However, it is the largest religious grouping in Scotland, with 32.4% of the population according to the 2011 census.  The other major Christian church is the Roman Catholic Church, the form of Christianity in Scotland prior to the Reformation, which accounted for 15.9% of the population and is especially important in West Central Scotland and the Highlands.  Scotland's third largest church is the Scottish Episcopal Church.

Amy Bess Miller: Amy Bess Williams Miller (May 4, 1912 – February 23, 2003) was an American historian, preservationist, trustee, and civic leader from the cities of Worcester and Pittsfield, Massachusetts.  Best known for leading the effort to preserve Hancock Shaker Village on the border of Pittsfield and Hancock, Massachusetts and establish a museum there, she was a major scholar of Shaker history, society, and artifacts.  In addition to serving as the Hancock museum's first president, she was president of the Berkshire Athenaeum, member of the Massachusetts Board of Library Commissioners and American Antiquarian Society, and trustee of Berkshire Medical Center, the Berkshire Museum, Miss Hall's School, the Massachusetts Audubon Society, and the Shaker Museum and Library.  Miller's published works all deal with Shaker history and society.  She wrote four books and co-edited a fifth, contributed an article to "The Herbarist", and contributed to numerous exhibits.

Mildred Barker: Ruth Mildred Barker (February 3, 1897 – January 25, 1990) was a musician, scholar, manager, and spiritual leader from the Alfred and Sabbathday Lake Shaker villages.  A prominent and respected Shaker during her long life, she is known primarily for her effort in preserving Shaker music.  With the help of Daniel Patterson, she recorded "Early Shaker Spirituals", a collection of Shaker songs.  In recognition of her achievements in the field, in 1983 she received the National Heritage Fellowship.  She also is known for co-founding and managing "The Shaker Quarterly", a magazine and journal focused on the Shakers, and to which she was a regular contributor.

South Union Shaker Center House and Preservatory: South Union Shaker Center House and Preservatory is a historic Shaker building on U.S. 68 in South Union, Kentucky.  It was built in 1822 and added to the National Register in 1974.  Located within the building is the Shaker Museum at South Union.

Shaker Heights Public Library: Shaker Heights Public Library is a library district in eastern Cuyahoga County, Ohio serving the city of Shaker Heights and that portion of the City of Cleveland, known as Shaker Square, which falls within the Shaker Heights City School District.  This service area encompasses 7.5 sqmi with a population of approximately 33,000.  Shaker Library consists of the Main Library, located at 16500 Van Aken Boulevard, and the Bertram Woods Branch Library, 20600 Fayette Road.

Shaker Museum at South Union: The Shaker Museum at South Union is located at the historic site of the South Union Shaker Village in Auburn, Kentucky, United States.  The village was established by the Shakers in 1807 and closed in 1922.  The museum itself is located in the South Union Shaker Center House and Preservatory, an 1824 40-room Centre House, filled with original artifacts exemplifying the Shakers' craftsmanship and unique way of life.

Shaker Museum and Library: The Shaker Museum and Library, officially known as Shaker Museum | Mount Lebanon, is a museum and research library concerned with the Shakers, a Protestant religious denomination founded in America by Ann Lee and her followers in 1774, and known more formally as the United Society of Believers in Christ's Second Appearing.  The museum and library collections relate to Shaker life and culture and are based in New Lebanon, New York.

Mount Lebanon Shaker Village: The Mount Lebanon Shaker Village is a historic site associated with the Shakers, a Protestant religious denomination.  Founded as a communal group in the 1787, the Shakers located their Central Ministry in New Lebanon, New York, United States, and built a village that eventually covered several thousand acres and housed hundreds of Believers.  (See also Mount Lebanon Shaker Society and Isaac N. Youngs.)

Religious conversion: Religious conversion is the adoption of a set of beliefs identified with one particular religious denomination to the exclusion of others.  Thus "religious conversion" would describe the abandoning of adherence to one denomination and affiliating with another.  This might be from one to another denomination within the same religion, for example, from Baptist to Catholic Christianity or from Sunni to Shi'a Islam.  In some cases, religious conversion "marks a transformation of religious identity and is symbolized by special rituals".

Supporting paragraphs: Amy Bess Miller Shaker Museum and Library
Answer: Protestant