sentences:  Which is another way of saying that there have been slightly different routes taken to attain the caliber enjoyed by many collections today.Some have relied principally on rapid denominational growth (which generated demand for clergy and brought in funding required from denominations and benefactors); some have prospered from the skill and vision of exceptional library leadership; some libraries have built their reputations on exquisite collections purchased and then donated by private individuals; still others have excelled in cultivating niche collections or services.The individual collections are unique, and the product of many sets of circumstances, so summarizing adequately here would be difficult.