{
  "matthew-boulton": {
    "name": "Matthew Boulton",
    "sourceUrl": "https://commons.wikimedia.org/wiki/File:Matthew_Boulton_-_Carl_Frederik_von_Breda.jpg",
    "credit": "Carl Frederik von Breda — Public domain"
  },
  "james-watt": {
    "name": "James Watt",
    "sourceUrl": "https://commons.wikimedia.org/wiki/File:Watt_James_von_Breda.jpg",
    "credit": "Carl Frederik von Breda — Public domain"
  },
  "jrr-tolkien": {
    "name": "J.R.R. Tolkien",
    "sourceUrl": "https://commons.wikimedia.org/wiki/File:J._R._R._Tolkien,_ca._1925.jpg",
    "credit": "Unknown photo studio commissioned by Tolkien's students 1925/6 (private communication from Catherine McIlwaine, Tolkien Archivist, Bodleian Library) — Public domain"
  },
  "george-cadbury": {
    "name": "George Cadbury",
    "sourceUrl": "https://commons.wikimedia.org/wiki/File:George_Cadbury1917.jpg",
    "credit": "Unknown author Unknown author — Public domain"
  }
}