Last year, Robert Longo, like so many of his New York City peers, was a full-time resident in his weekend house here, improvising studio space in a basement, which he called “a storm of chaos,” while he waited to move into another house in Northwest.

In the midst of the pandemic, he was organizing “All for the Hall,” a benefit exhibition for Guild Hall, recruiting his friends to donate work and finding an eager artistic community ready to give back when it was so urgently needed.