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New York Public Library Invites a Deep Digital Dive

Part of one of the “Tale of Genji” scrolls available for easy exploration now that the New York Public Library has released nearly 200,000 public-domain items from its special collections.Credit...Spencer Collection, The New York Public Library

Mansion Maniac, a whimsical online toy created by the New York Public Library, may seem like envy bait for the real-estate have-nots. With the help of a Pac-Man-like icon, users can explore the floor plans of some of the city’s most extravagant early-20th-century residences, culled from the library’s archives.

But the game is what you might call a marketing teaser for a major redistribution of property, digitally speaking: the release of more than 180,000 photographs, postcards, maps and other public-domain items from the library’s special collections in downloadable high-resolution files — along with an invitation to users to grab them and do with them whatever they please.

Digitization has been all the rage over the past decade, as libraries, museums and other institutions have scanned millions of items and posted them online. But the library’s initiative (nypl.org/publicdomain), which goes live on Wednesday, goes beyond the practical questions of how and what to digitize to the deeper one of what happens next.

“We see digitization as a starting point, not end point,” said Ben Vershbow, the director of NYPL Labs, the in-house technology division that spearheaded the effort. “We don’t just want to put stuff online and say, ‘Here it is,’ but rev the engines and encourage reuse.”

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Mansion Maniac, an online game created by the library, lets users explore the floor plans of old apartments using a Pac-Man-like figure.Credit...Courtesy of The New York Public Library

A growing number of institutions have been rallying under the banner of “open content.” While the library’s new initiative represents one of the largest releases of visually rich material since the Rijksmuseum in Amsterdam began making more than 200,000 works available in high-quality scans free of charge in 2012, it’s notable for more than its size.

“It’s not just a data dump,” said Dan Cohen, the executive director of the Digital Public Library of America, a consortium that offers one-stop access to digitized holdings from more than 1,300 institutions.

The New York Public has “really been thinking about how they can get others to use this material,” Mr. Cohen continued. “It’s a next step that I would like to see more institutions take.”

Most items in the public-domain release have already been visible at the library’s digital collections portal. The difference is that the highest-quality files will now be available for free and immediate download, along with the programming interfaces, known as APIs, that allow developers to use them more easily.

Crucially — if wonkily — users will also have access to information from the library’s internal rights database, letting them know which items are free of what the library is carefully calling “known United States copyright restrictions.”

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Covers of the Green Book, a guidebook published from 1936 to 1966 that listed hotels, restaurants and other establishments across the country that welcomed African-Americans.Credit...Schomburg Center for Research in Black Culture, Jean Blackwell Hutson Research and Reference Division, The New York Public Library

“We are trying to make it so users can not only see things, but can make determinations about whether to use them in new ways,” said Greg Cram, the library’s associate director of copyright and information policy.

NYPL Labs, started in 2011, has been known for experimental projects aimed at spurring users’ own tweaks and remixes. One scholar used its What’s on the Menu? project, which enlisted library users to transcribe its collection of 45,000 New York City restaurant menus, to create a new “data curation” of the collection. An engineer at Google has created a Google Cardboard application for its Stereogranimator, a program designed to mimic the proto-3-D effects of old-fashioned stereogram viewers.

Items from the digital collections have also found their way into projects like Urban Scratch-Off, a “map hack” that lets users scratch an aerial photograph of New York, lottery-ticket style, to reveal aerial shots of the city in 1924, and Mapping Cholera, which tracks an 1832 epidemic using geodata harvested from maps belonging to the library.

The new release will “reduce friction and make it even easier for people to get their hands on out-of-copyright material” owned by the library, Mr. Vershbow said.

The library plans to offer Remix Residencies, which will provide financial support for projects using the public-domain materials. NYPL Labs staff members also spent the weeks before the holidays creating quick-and-dirty demonstration projects, which, like Mansion Maniac, are being posted along with the release.

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Street View, Then & Now allows users to compare current images along Fifth Avenue with wide-angle shots taken by the photographer Burton Welles in 1911.Credit...New York Public Library

Street View, Then & Now allows users to wander up and down Fifth Avenue, comparing a current image of any location from Google Streetview with wide-angle shots taken by the photographer Burton Welles in 1911, a moment when groups like the Save New York Committee were already warning about the “wrong” sort of development.

On a less nostalgic note, Navigating the Green Book allows users to map a road trip using the Green Book, a guidebook published from 1936 to 1966 that listed hotels, restaurants and other establishments across the country that welcomed African-Americans.

If someone wants to “extract more data” from the guidebooks and improve his team’s stab at the digital navigator, Mr. Vershbow said, bring it on.

Phrases like “extract more data” may fall hard on traditionalist ears. But Mr. Vershbow said the spirit of the enterprise was nothing new.

“It’s the old library mission: Take it and run, and make it your own,” he said.

A version of this article appears in print on  , Section C, Page 7 of the New York edition with the headline: With Data Release, Library Invites Patrons to Do a Deep Digital Dive. Order Reprints | Today’s Paper | Subscribe

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