[
  {
    "title": "Peggy Guggenheim",
    "url": "https://www.guggenheim-venice.it/en/art/in-depth/peggy-guggenheim/about-peggy/",
    "type": "Profile source"
  },
  {
    "title": "Edik Natanov",
    "url": "https://ediknatanovcollection.com/exhibitions",
    "type": "Profile source"
  },
  {
    "title": "Dorothy & Herbert Vogel",
    "url": "https://www.nga.gov/stories/articles/remembering-vogels-modern-art-collectors",
    "type": "Profile source"
  },
  {
    "title": "George Costakis",
    "url": "https://www.momus.gr/en/museum/museum-modern-art",
    "type": "Profile source"
  },
  {
    "title": "Sergei Shchukin",
    "url": "https://www.fondationlouisvuitton.fr/en/events/icons-of-modern-art-the-shchukin-collection",
    "type": "Profile source"
  },
  {
    "title": "Ivan Morozov",
    "url": "https://www.fondationlouisvuitton.fr/fr/evenements/icones-de-l-art-moderne-la-collection-morozov",
    "type": "Profile source"
  },
  {
    "title": "Mikhail Morozov",
    "url": "https://www.fondationlouisvuitton.fr/fr/evenements/icones-de-l-art-moderne-la-collection-morozov",
    "type": "Profile source"
  },
  {
    "title": "Ernst & Hildy Beyeler",
    "url": "https://www.fondationbeyeler.ch/en/collection",
    "type": "Profile source"
  },
  {
    "title": "Norton Simon",
    "url": "https://www.nortonsimon.org/art",
    "type": "Profile source"
  },
  {
    "title": "Isabella Stewart Gardner",
    "url": "https://www.gardnermuseum.org/story/isabella-stewart-gardner-life",
    "type": "Profile source"
  },
  {
    "title": "Agnes Gund",
    "url": "https://www.aaa.si.edu/collections/interviews/oral-history-interview-agnes-gund-22395",
    "type": "Profile source"
  },
  {
    "title": "Unknown Avant-Garde",
    "url": "https://ediknatanovcollection.com/exhibition-yaroslavl-2005",
    "type": "Owner archive"
  },
  {
    "title": "Russian Avant-Garde: Known and Unknown",
    "url": "https://ediknatanovcollection.com/exhibition-nizhny-2005",
    "type": "Owner archive"
  },
  {
    "title": "Masters of the Russian Avant-Garde",
    "url": "https://ediknatanovcollection.com/exhibition-perm-2005",
    "type": "Owner archive"
  },
  {
    "title": "Theatre of the Russian Avant-Garde",
    "url": "https://ediknatanovcollection.com/exhibition-yekaterinburg-2005",
    "type": "Owner archive"
  },
  {
    "title": "Russian Avant-Garde and Its National Origins",
    "url": "https://ediknatanovcollection.com/exhibition-yekaterinburg-2009",
    "type": "Owner archive"
  },
  {
    "title": "Metabolism, the City of the Future",
    "url": "https://www.mori.art.museum/en/exhibitions/2011/",
    "type": "Museum record"
  },
  {
    "title": "Inventing Abstraction, 1910–1925",
    "url": "https://www.moma.org/calendar/exhibitions/1273",
    "type": "Museum record"
  },
  {
    "title": "Dalí: All of the Poetic Suggestions and All of the Plastic Possibilities",
    "url": "https://www.museoreinasofia.es/sites/default/files/exposiciones/folletos/folleto_dali_en.pdf",
    "type": "Museum record"
  },
  {
    "title": "Henri Matisse: The Cut-Outs",
    "url": "https://www.moma.org/calendar/exhibitions/1429",
    "type": "Museum record"
  },
  {
    "title": "The Forever Now: Contemporary Painting in an Atemporal World",
    "url": "https://www.moma.org/calendar/exhibitions/1455",
    "type": "Museum record"
  },
  {
    "title": "Icons of Modern Art: The Shchukin Collection",
    "url": "https://www.fondationlouisvuitton.fr/en/events/icons-of-modern-art-the-shchukin-collection",
    "type": "Museum record"
  },
  {
    "title": "Monet",
    "url": "https://www.fondationbeyeler.ch/fileadmin/user_upload/Presse/Medienmitteilungen_E/EN_MONET_press_kit.pdf",
    "type": "Museum record"
  },
  {
    "title": "Van Gogh and the Seasons",
    "url": "https://www.ngv.vic.gov.au/exhibition/van-gogh-and-the-seasons/",
    "type": "Museum record"
  },
  {
    "title": "Hokusai: Beyond the Great Wave",
    "url": "https://www.britishmuseum.org/research/projects/late-hokusai-thought-technique-society",
    "type": "Museum record"
  },
  {
    "title": "Yayoi Kusama: Life Is the Heart of a Rainbow",
    "url": "https://www.nationalgallery.sg/sg/en/about/media-centre/yayoi-kusama-s-exhibition-draws-record-crowds-to-national-gallery-singapore.html",
    "type": "Museum record"
  },
  {
    "title": "Hilma af Klint: Paintings for the Future",
    "url": "https://www.guggenheim.org/wp-content/uploads/2019/03/guggenheim-press-Hilma-af-Klint_FinalWeeks-2.pdf",
    "type": "Museum record"
  },
  {
    "title": "Tarsila Popular",
    "url": "https://masp.org.br/exposicoes/tarsila-popular",
    "type": "Museum record"
  },
  {
    "title": "The Morozov Collection: Icons of Modern Art",
    "url": "https://www.fondationlouisvuitton.fr/fr/evenements/icones-de-l-art-moderne-la-collection-morozov",
    "type": "Museum record"
  },
  {
    "title": "When We See Us: A Century of Black Figuration in Painting",
    "url": "https://zeitzmocaa.museum/exhibition/when-we-see-us-a-century-of-black-figuration-in-painting/",
    "type": "Museum record"
  },
  {
    "title": "Vermeer",
    "url": "https://www.rijksmuseum.nl/en/press/rijksmuseum-s-vermeer-exhibition-most-successful-in-its-history",
    "type": "Museum record"
  },
  {
    "title": "Agnes Gund / Oral history · 2024",
    "url": "https://www.aaa.si.edu/collections/interviews/oral-history-interview-agnes-gund-22395",
    "type": "Archive / biography"
  },
  {
    "title": "Dorothy & Herbert Vogel / Personal papers · 1960s–2009",
    "url": "https://www.aaa.si.edu/collections/dorothy-and-herbert-vogel-papers-9265/biographical-note",
    "type": "Archive / biography"
  },
  {
    "title": "Peggy Guggenheim / Museum biography · Personal recollections",
    "url": "https://www.guggenheim-venice.it/en/art/in-depth/peggy-guggenheim/about-peggy/",
    "type": "Archive / biography"
  }
]