
The Mauritshuis is an art museum in The Hague, Netherlands. The museum houses the Royal Cabinet of Paintings which consists of 854 objects, mostly Dutch Golden Age paintings. The collection contains works by Johannes Vermeer, Rembrandt van Rijn, Jan Steen, Paulus Potter, Frans Hals, Jacob van Ruisdael, Hans Holbein the Younger, and others. Originally, the 17th-century building was the residence of count John Maurice of Nassau. It is now the property of the government of the Netherlands and is listed in the top 100 Dutch heritage sites.

Willem Drost was a Dutch Golden Age painter and printmaker of history paintings and portraits.

The Norton Simon Museum is an art museum located in Pasadena, California. It was previously known as the Pasadena Art Institute and the Pasadena Art Museum and displays numerous sculptures on its grounds.

The National Gallery of Art, and its attached Sculpture Garden, is a national art museum in Washington, D.C., United States, located on the National Mall, between 3rd and 9th Streets, at Constitution Avenue NW. Open to the public and free of charge, the museum was privately established in 1937 for the American people by a joint resolution of the United States Congress. Andrew W. Mellon donated a substantial art collection and funds for construction. The core collection includes major works of art donated by Paul Mellon, Ailsa Mellon Bruce, Lessing J. Rosenwald, Samuel Henry Kress, Rush Harrison Kress, Peter Arrell Browne Widener, Joseph E. Widener, and Chester Dale. The Gallery's collection of paintings, drawings, prints, photographs, sculpture, medals, and decorative arts traces the development of Western Art from the Middle Ages to the present, including the only painting by Leonardo da Vinci in the Americas and the largest mobile created by Alexander Calder.

Jean-Honoré Fragonard was a French painter and printmaker whose late Rococo manner was distinguished by remarkable facility, exuberance, and hedonism. One of the most prolific artists active in the last decades of the Ancien Régime, Fragonard produced more than 550 paintings, of which only five are dated. Among his most popular works are genre paintings conveying an atmosphere of intimacy and veiled eroticism.

The Calouste Gulbenkian Museum houses one of the world's most important private art collections. It includes works from Ancient Egypt to the early 20th century, spanning the arts of the Islamic World, China and Japan, as well as the French decorative arts, the jewellery of René Lalique and some of the most important painters of all times works such as Rembrandt, Monet, Rubens, Manet, Renoir, Degas and Turner.

The Thyssen-Bornemisza National Museum, or simply the Thyssen, is an art museum in Madrid, Spain, located near the Prado Museum on one of the city's main boulevards. It is known as part of the "Golden Triangle of Art", which also includes the Prado and the Reina Sofía national galleries. The Thyssen-Bornemisza fills the historical gaps in its counterparts' collections: in the Prado's case this includes Italian primitives and works from the English, Dutch and German schools, while in the case of the Reina Sofia it concerns Impressionists, Expressionists, and European and American paintings from the 20th century.

The Herzog Anton Ulrich Museum (HAUM) is an art museum in the German city of Braunschweig, Lower Saxony.

The Frick Art Reference Library is the research arm of The Frick Collection. Its reference services have temporarily relocated to the Breuer building at 945 Madison Avenue, called Frick Madison, during the renovation of the Frick's historic buildings at 10 East 71st Street in New York City. The library was founded in 1920 and it offers public access to materials on the study of art and art history in the Western tradition from the fourth to the mid-twentieth century. It is open to visitors 16 years of age or older and serves the greater art and art history research community through its membership in the New York Art Resources Consortium.

The Musée Jacquemart-André is a private museum located at 158 Boulevard Haussmann in the 8th arrondissement of Paris. The museum was created from the private home of Édouard André (1833–1894) and Nélie Jacquemart (1841–1912) to display the art they collected during their lives.

St. Francis in Ecstasy is a painting by Italian Renaissance master Giovanni Bellini, started in 1475 and completed around 1480. Bellini depicted the religious figure of St. Francis of Assisi in a landscape. In 1852, the painting was listed on June 19 at Christie's. It was part of the 1857 Manchester Art Treasures exhibition. In 1915, Henry Clay Frick bought the painting for $170,000, and it remains in the Frick Collection, in New York City.

The National Gallery is the primary British national public art gallery, sited on Trafalgar Square, in central London. It is home to one of the world's greatest collections of Western European paintings. Founded in 1824, from an initial purchase of 36 paintings by the British Government, its collections have since grown to about 2,300 paintings by roughly 750 artists dating from the mid-13th century to 1900, most of which are on display. This page lists some of the highlights of the collection.

The musée des Beaux-Arts et d'Archéologie in the French city of Besançon is the oldest public museum in France. It was set up in 1694, nearly a century before the Louvre became a public museum.

The Henry Clay Frick House was the residence of the industrialist and art patron Henry Clay Frick in New York City. The mansion is located between 70th and 71st Street and Fifth Avenue on the Upper East Side of Manhattan. It was constructed in 1912–1914 by Thomas Hastings of Carrère and Hastings. It was transformed into a museum in the mid-1930s and houses the Frick Collection and the Frick Art Reference Library. The house and library were designated a National Historic Landmark in 2008 for their significance in the arts and architecture as a major repository of a Gilded Age art collection.

The Polish Rider is a seventeenth-century painting, usually dated to the 1650s, of a young man traveling on horseback through a murky landscape, now in The Frick Collection in New York. When the painting was sold by Zdzisław Tarnowski to Henry Frick in 1910, there was consensus that the work was by the Dutch painter Rembrandt. This attribution has since been contested, though those who contest it remain in the minority.
William Suhr was an American art conservator who led the conservation department of the Frick Collection from 1935 to 1977.
Thomas Agnew & Sons is a fine arts dealer in London that began life as part of in a print and publishing partnership with Vittore Zanetti in Manchester in 1817 which ended in 1835, when Agnew took full control of the company. The firm opened its London gallery in 1860, where it soon established itself as one of Mayfair's leading dealerships. Since then Agnew's has held a pre-eminent position in the world of Old Master paintings. It also had a major role in the massive growth of a market for contemporary British art in the late 19th century. In 2013, after nearly two centuries of family ownership, Agnew's closed. The name was subsequently purchased privately and the gallery is now run by Lord Anthony Crichton-Stuart, a former head of Christie's Old Master paintings department, New York.

Arthur Joseph Sulley (1853-1930) was a London-based art dealer best known for selling Dutch Old Master paintings, including the record-setting Rembrandt van Rijn's The Mill.

The De Wild family was a Dutch family of art professionals, including conservator-restorers, art dealers, painters, and connoisseurs. Prominent internationally in the late nineteenth century and into the twentieth century, they were especially known for their advances in art restoration.
Xavier F. Salomon is a British art critic and both Deputy Director and Peter Jay Sharp Chief Curator at the Frick Collection in New York. Born in Rome to an English mother and Danish father, he has British citizenship and is most notable for his expertise on Paolo Veronese. From April 2020 through July 2021, Salomon hosted an online program "Cocktails with a Curator" with Frick curators Aimee Ng and Giulio Dalvit. The program examined artworks at the Frick and had 66 episodes, which are available on YouTube and are the basis of a book.