What does mr Calloway write on the rocks. Bud not buddy?

In "Bud, Not Buddy," Mr. Calloway writes "Herman E. Calloway, Grand Calloway Survives. HB" on the rocks by the side of the road, hoping to reconnect with his lost daughter, Angela. Bud comes across this message while he is searching for his father, who he believes is Herman E. Calloway.