A painter’s art is irreplaceable, so it was no surprise that 44 seniors at Pratt Institute were heartsick, many of them left sobbing, when their studios and the paintings they kept there went up in flames in February in a middle-of-the-night fire at the art and design school’s historic Main Building in Clinton Hill, Brooklyn.

But far from despairing, the students have moved on and painted new works, and those new works, as well as some older paintings and perhaps some that survived the fire, will be put on public exhibition at the Seagram Building next month in a weeklong show arranged by the art dealer Larry Gagosian.

Mr. Gagosian, better known for trading in works by masters like Jasper Johns and Jeff Koons for tens of millions of dollars, said in an interview that he had been moved by the students’ “incredibly traumatic” story partly because he himself had almost lost many valuable paintings in a smoky fire at his Hamptons home in 2011.

Because his own galleries were all booked, Mr. Gagosian spoke to a friend and art collector, Aby Rosen, an owner of the Seagram Building, which was designed by Mies van der Rohe, and Mr. Rosen offered the empty eighth floor.