And when McGahee promised to return with Lewis, they roared with anticipation.
Minutes later, McGahee and a sweaty Lewis pulled up, causing a minor mob scene as the kids shouted in disbelief and thrust T-shirts (some still on their backs) at Lewis for autographs.
Johnny Unitas handed off the ball, during the 1958 conference title game.
They wouldn't have seen his three catches for 126 yards, including his 60-yard touchdown, in the 1959 championship, or any of the magic that ushered him into the Hall of Fame in 1975.
And Moore knows this. He passed out autographed photographs of himself and posed for snapshots with the kids but said he would be "happily shocked" if they knew him the way they know Lewis.
One 15-year-old from Washington, detained at Cheltenham, said meeting Moore was "real cool. My brother knows all about him."
Another Cheltenham kid, an 18-year-old from Capitol Heights, said he wasn't terribly familiar with Moore's career but had heard of him.
"I never thought I would meet a Hall of Famer," he said.
Moore's Juvenile Services co-workers were more familiar with him, and in some ways were even more tickled to get his autograph.
Earl Winfield, a residential adviser at Victor Cullen and once a college and Canadian Football League player, said he was "thrilled" to meet a star he had idolized as a young player.
"What's great is that he is a good man. Helping people is his life," Winfield said. "They don't make them like that anymore."