This photo was taken somewhere on the Upper West Side, sometime in the past. Can you figure out where, when, and what it shows?

It's a bird, it's a plane, no, it's the 9 train!

"Yay you, Church!"

An exhibit on Hollywood's blacklisting offers lessons on "who gets to define what’s American and un-American."

Juneteenth events Thursday on the UWS include a run in Central Park, jazz at Dizzy's Club, and a screening of a Harriet Tubman film

This photo was taken somewhere on the Upper West Side, sometime in the past. Can you figure out where, when, and what it shows?

Let’s come down. Just for a moment. In this city obsessed with going up, sometimes the best stories lie below.

I have an Old Negs file I call "Strictly UWS," which has images that I think come close.

I was fascinated by the way they lit them, held them, or let them dangle from their lips.

This photo was taken somewhere on the Upper West Side, sometime in the past. Can you figure out where, when, and what it shows?

Women in fur coats socializing with neighbors on the Broadway medians.

In fighting for social justice for nearly 150 years, Ethical Culture Society has been "punching well above its weight."

This photo was taken somewhere on the UWS, sometime in the past -- but where, and when? Introducing a new biweekly history challenge.

As I photographed, I knew those vehicles would look so different from whatever would be in existence 40 or 50 years later.

Beneath the surface of "our" New York is everyone else's New York — layers of lives, loves, businesses, and histories we rarely notice.

I realized, in 50 years, the world wouldn't look like it did in the 1970s and 80s.

Nothing lasts forever.

Hand-painted signs are one-of-a-kind art that reflect the skill of the sign painter and the unique identity of a business.

Hundreds gathered on Friday in Riverside Park to commemorate the Warsaw Ghetto Uprising.

Some things have vanished, some are restored and remain.

By 1920 Polly Adler was well on her way to becoming, in her words, “the best goddamn madam in America.”

The Upper West Side apartment Babe Ruth called home for more than a decade is once again on the market.

I wanted to capture it and preserve it for the future. Now it's the future and those days are vanished.

What do a seemingly random collection of words etched into the concrete of a bridge in Riverside South have in common?

The Apthorp mansion was "an exceedingly good house, elegantly furnished, commanding beautiful prospects."

A sense of place is the essence and character of a location and the emotional bonds individuals form with it.

These Upper West Side moms had access to money, lawyers, and the media — their block was brimming with influential neighbors.

A few Thursdays ago, a reader commented that the photos had “so many hats!” "A theme!" I thought.

The city's grid street plan spelled the end for Jauncey Lane, which ran between two new city-planned streets.

I was fascinated by everything on the Upper West Side in those vanished days and I tried to photograph it all,