William Shakespeare | William Laud | William Blake | William | William III of England | William Morris | William McKinley | Ralph Waldo Emerson | William Howard Taft | William Ewart Gladstone | William the Conqueror | William S. Burroughs | William Shatner | William Faulkner | William Randolph Hearst | Ralph Lauren | William Wordsworth | William Tecumseh Sherman | Ralph Nader | William Hogarth | Prince William, Duke of Cambridge | Ralph Vaughan Williams | William Penn | William Jennings Bryan | William Gibson | William Wilberforce | William James | William Makepeace Thackeray | Fort William | William Hanna |
After Baker left Cuba, León corresponded extensively with Nathaniel Lord Britton at the New York Botanical Garden, grass specialists A. S. Hitchcock and Mary Agnes Chase at the United States Department of Agriculture, and fern specialist William Ralph Maxon at the United States National Museum.