“IT’S LIKE GOOGLE IMAGES, but in paper and folders.” This has been the simplest way for me to describe the New York Public Library’s Picture Collection to friends, family, and students unfamiliar with one of New York City’s great underknown treasures. The analogy captures the important features of the Picture Collection—its scale, its indexing, and its promise of democratized access. Here, more than a million clipped photographs, prints, maps, illustrations, and sundry other material are organized under thousands of subject headings—from “Apparitions” to “Scorpions” to “Trade Unions”—and are