Urban Scratchoff

Using an interactive interface to compare present-day and historical maps and aerial imagery is done all the time—on this website I use a slider plugin—but Chris Whong’s Urban Scratchoff uses a familiar metaphor to compare present-day aerial images of New York City with imagery from 1924. Give it a try. More on how Chris did it. [via]

Mapping Manhattan

Book cover: Mapping Manhattan A new book collects hand-drawn maps of Manhattan submitted by both anonymous and notable New Yorkers: Becky Cooper’s Mapping Manhattan: A Love (and Sometimes Hate) Story in Maps by 75 New Yorkers.

It started with Manhattan in the summer of 2009 when Becky was still an undergraduate at Harvard University. Inspired by Italo Calvino’s Invisible Cities, as well as her own experience creating a map of New York’s public art, Becky walked the length of Broadway, distributing over a thousand letterpress-printed outlines of the borough to the widest variety of New Yorkers she could find.

The maps she got back have been posted online, and now there’s a book. Fascinating project. Brain Pickings and The New York Times Magazine have profiles (with image galleries). Via io9.

The Measure of Manhattan

Book cover: The Measure of Manhattan Another mapmaker is getting a book-length biography. The Measure of Manhattan, Marguerite Holloway’s biography of surveyor John Randel, Jr. (1787-1865), whose decade-long survey of the island of Manhattan was the basis for that city’s street grid, comes out in February. Via BLDGBLOG, who blurbed it: “Marguerite Holloway’s engaging survey takes us step by step through the challenges of obsolete land laws and outdated maps of an earlier metropolis, looking for—and finding—the future shape of this immeasurable city.” Buy at Amazon | publisher’s page