Britains Most Fragile Treasure. Word Search Puzzle Solver. Britains Most Fragile Treasure word Search Puzzle Game. Find words related to movie actors, actresses, and genres. Word Search Puzzle Solver. Historian Dr Janina Ramirez unlocks the secrets of a centuries-old masterpiece in glass. At 78 feet in height the famous East Window at York Minster is the largest medieval stained-glass window in the country and it was the creative vision of a single artist - a mysterious master craftsman called John Thornton one of the earliest named English artists. The East Window of York Minster is far more than a work of artistic genius it is a window onto the medieval world and the medieval mind - telling us who were once were and who we still are all preserved in the most fragile medium of all. This includes identifying and searching for words that are related to : Helen Whittaker, Tim Ayers, Sarah Brown, Walter Pinches, Richard Marks, Nick Teed, Tony Cattle, Keith Jones, Tim Ayers, Walter Pinches, History, History, Keith Jones, Documentary, Documentary .