... On Lincoln’s first visit [to New York City], in 1860, he stopped to have his picture, now indelible, taken by the photographer Mathew Brady. Less well known is that, on his 1861 trip, the other great New York image-maker of the time, the cartoonist Thomas Nast, saw him, too—for the first time—and made a series of drawings that are startling in their intimacy and alert observational power. The series has been known by scholarly rumor, but recently, tucked among the sketches in a Civil War notebook, two small images that Nast made of Lincoln’s face have been uncovered for the first time. This discovery we owe to the historian Ted Widmer, who came upon them in the archives of Brown University.

“I’ve been working on a book about that train trip from Springfield to Washington,” Widmer, who worked as a speechwriter in the Clinton White House, explained the other morning. “Presidents had never been as exciting to people before as Lincoln was at this moment. He was performing his part—the part of the President-to-be, and even the part of the savior of his country. He started off with a couple of so-so speeches, but he got his game going and was giving great speeches by the time he got to New York.”

Searching for material at Brown—which has an exceptional Lincoln archive, including the collection of John Hay, Lincoln’s secretary—Widmer came upon a Civil War notebook with sketches in it ascribed to Nast. Turning the pages, he found a series showing Lincoln arriving at 30th Street train station, the precursor to New York’s Penn Station. Nast, only twenty, was already drawing regularly for Harper’s Weekly and other papers (although his first cartoon of Santa Claus, whose now iconic shape and beard were largely Nast’s invention, was about a year off).

“I’ve been working on a book about that train trip from Springfield to Washington,” Widmer, who worked as a speechwriter in the Clinton White House, explained the other morning. “Presidents had never been as exciting to people before as Lincoln was at this moment. He was performing his part—the part of the President-to-be, and even the part of the savior of his country. He started off with a couple of so-so speeches, but he got his game going and was giving great speeches by the time he got to New York.”

Searching for material at Brown—which has an exceptional Lincoln archive, including the collection of John Hay, Lincoln’s secretary—Widmer came upon a Civil War notebook with sketches in it ascribed to Nast. Turning the pages, he found a series showing Lincoln arriving at 30th Street train station, the precursor to New York’s Penn Station. Nast, only twenty, was already drawing regularly for Harper’s Weekly and other papers (although his first cartoon of Santa Claus, whose now iconic shape and beard were largely Nast’s invention, was about a year off)....