Starting in his early teens, Corrêa do Lago has gathered what is widely considered the largest private collection of autograph letters and manuscripts formed in the past 50 years. The subject of his 2003 book entitled True to the Letter (published in five languages), the collection has since grown to become the most comprehensive in the six areas focused on by Corrêa do Lago: art, literature, history, science, music and entertainment. Over a span of 45 years, he assembled tens of thousands of letters, documents, signed photographs and all sorts of manuscript items emanating from the four or five thousand figures he recognized as most prominent in these fields since 1500. Significant pieces from personalities such as Newton and Einstein, Mozart and Beethoven, Van Gogh and Picasso, Joyce and Proust, Henry VIII and Gandhi, Chaplin and Disney are present in the collection, which will be shown to the public for the first time from June to September, 2018, at The Morgan Library & Museum in New York when 130 selected items will be exhibited.