The Article Archive contains New York Times articles dating back to 1851, and is organized into three date ranges.
Available to download (PDF):
1851–1922: Full articles are free to access for all visitors.
1923–1980: Full articles are accessible to paid subscribers, or are available for purchase.
Available to view online:
1981–Present: Full articles are accessible by all visitors, but count toward the monthly limit of 10 free articles per month.
The archives also include Times Machine, a browser-based digital replica of every edition of The New York Times published between 1851 and 1980. Times Machine is available only to paid subscribers (not including NYT Now or NYT Opinion subscribers).