Complex sentence: The manuscript collection of more than 7,000 volumes, more than 14,000 original legal documents, and 500 rolls, formed by Robert Harley (1661--1724), and his son Edward Harley (1689-1741).
Split into simpler sentences: The manuscript collection of more than 7,000 volumes; more than 14,000 original legal documents; and more than 500 rolls. It was formed by Robert Harley (1661--1724) and his son Edward (1689-1741).