The Library was overcrowded when finished, because Roosevelt did not expect to serve as president for more than two terms. A 1950 estimate stated that the library contained 50 million items, including 16,000 books, 15,000 photographs, 275,000 feet of movie film, and 300 sound recordings. The building is built of Hudson Valley fieldstone in the style reminiscent of the local Dutch colonial architecture which he favored. A sketch made by President Roosevelt dated April 12, 1937, shows the proposed building placed on the grounds very close to the site ultimately chosen and a ground plan roughly approximating that of the main block today. He built it with privately donated funds, at a cost of $376,000 and then turned it over to the federal government on July 4, 1940 to be operated by the National Archives. By his actions, Roosevelt ensured that his papers would become the property of the nation and be housed in a library on the grounds of his Hyde Park estate where they would be available to scholars. Robert D.W. Connor, the first Archivist of the United States, said of the President, "Franklin D. Roosevelt is the nation's answer to the historian's prayer."