Numismatist noted numismatist who was not an avid collector, and King Farouk I of Egypt was an avid collector who had very little interest in numismatics. Harry Bass by comparison was a noted collector who was also a numismatist. The second group are the coin dealers. Often called professional numismatists, they authenticate or grade coins for commercial purposes. The buying and selling of coin collections by numismatists who are professional dealers advances the study of money, and expert numismatists are consulted by historians, museum curators, and archaeologists. See, for example, the International Association of Professional Numismatists (IAPN) and the British Numismatic
Niagara Falls, or Does It? Niagara Falls, or Does It? Niagara Falls, or Does it? (2003, ) is the first book in the Hank Zipzer series, written by Henry Winkler and Lin Oliver, illustrated by Jesse Joshua Watson and published by Grosset & Dunlap. Hank starts a new year at his school and meets his new teacher, who has her students write an essay about their summer vacations. Hank has a hard time with homework and with staying on task, thus making his essay a difficult assignment. Meanwhile, his grandpa, Papa Pete, asks Hank and his friends Ashley Wong and Frankie Townsend (the Magic 3,