Designed in the manner of Italian Renaissance Architect Andrea Palladio, in the Georgian-Palladian style, it was the first classical public building built in America. The main facade, facing Bellevue avenue, is based upon a plate in Edward Hoppus' Andrea Palladio's Architecture published in 1735. The oldest section, today called the Harrison Room, still houses the majority of the original books that were purchased as a collection in London. Occupying British troops allegedly looted numerous books (many of which were later returned) prior to the Battle of Rhode Island during the American Revolution. In 1932, historian and architect Norman Isham restored the eighteenth century Harrison room to what he concluded was its original appearance. The Library's modern collection now includes more than 160,000 volumes as well as a museum collection of art and artifacts. The building was designated a National Historic Landmark in 1966.