Collection highlights include vital records, census, and city directories that are an essential resource for patrons conducting family history research, the number one hobby in America. Records pertaining to the administration of criminal justice, dating from 1684 to 1966, constitute the largest and most comprehensive collection of such material in the English-speaking world. There are more than one million photographic images in fifty collections including pictures of every house and building in the city, ca. 1940. Legislative branch records date back to the first Dutch colonial government in New Amsterdam. Robert Moses’ papers document the city’s vast infrastructure from 1934 through 1959, and the records of mayoral administrations provide extensive information about every aspect of New York City from 1849 to the present.