Gamble, who entered the building at Broad and Spruce streets yesterday for the first time since the fire, said that the historic Gamble-Huff recording studio was not damaged but that a number of gold albums and photographs were unaccounted for.
"It was dark in there so at this point, we just don't know where they are," he said. "They could have been knocked off the walls or were melted."
Firefighters responded to the building about 7:30 a.m. Sunday and battled the two-alarm blaze for just under an hour.
The bulk of the fire was contained on the third floor, where the recording studios and executive offices are situated.
When firefighters arrived, a man was hanging out of a third-floor window and was rescued by ladder, Fire Commissioner Lloyd Ayers said.
The man was treated at an area hospital, then questioned by police and the fire marshal. He was released yesterday, though the investigation continues, Ayers said.
Gamble said it was his understanding that the man was "uncooperative" during interviews. Gamble said no one should have been in the building at that time.
The offices belonging to Gamble's uncle, Kenny Gamble, and his producing partner, Leon Huff - where other singing notables such as Diana Ross and the Temptations have visited - were "torn apart" and hard to see, Chuck Gamble said.
The producing duo was in New York City at the time of the fire.
Contractors covered the building's roof yesterday in advance of the rain expected today.
Gamble said that the building would be fixed and that the company would continue to operate while the building is shuttered.
"While we still do recording," he said, "most of what we do now is licensing and marketing, and that can be handled online and digitally."