How do you share 175 years of New York Times history?

One hundred and seventy-five years is a long time. The telephone is only 150 years old. Air-conditioning didn’t come on the scene until 124 years ago. TV is practically a baby at just 100.

So with The New York Times celebrating its 175th anniversary this fall — the first issue was published on Sept. 18, 1851 — you might think that David Shipley, the editor overseeing coverage of the milestone, would have been daunted trying to get his hands around it.

On the contrary, he was excited by the challenge.

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