Before the digital age, many New York Times articles were updated or scrapped between editions, and never saved on microfilm.

This month sees the official launch of the Revolutionary War commemorations — the beginning of a year-and-a-half-long celebration leading up to next year’s Semiquincentennial. And the (mostly ...

Trump Weakens U.S. Cyberdefenses at a Moment of Rising Danger The firing of the head of the N.S.A. was only the latest move to erode fortifications against cyberattacks, especially those targeting ...