Among the materials the Wright Brothers estate gave the Library of Congress in 1948 were 300 glass plate negatives and two nitrate negatives, most taken by the Wright brothers themselves between 1897 and 1928. About 200 views from 1900 to 1911 document their successes and failures with their new flying machines. The collection provides an excellent pictorial record of the Wright brothers laboratory, engines, models, experimental planes, runways, flights, and even their accidents. The collection also contains individual portraits and group pictures of the Wright brothers and their family and friends, as well as photos of their homes, other buildings, towns, and landscapes.