The New York Public Library — You can now explore more than 5,000 digitized...
lterrat's bookmarks 2017-04-09
Summary:
"You can now explore more than 5,000 digitized street maps of New York City from 1850-1950 using our Maps by Decade tool! You can also grab the historical open data sets used to create this tool and use them in your own projects. Learn more about our ongoing NYC Space/Time Directory project."