Why does MrLewis send a telegram to Herman E Calloway in Bud Not Buddy?

In "Bud, Not Buddy," Mr. Lewis sends a telegram to Herman E. Calloway to inform him about Bud Caldwell's arrival and to seek his assistance. Bud, who is searching for his father, believes that Calloway is connected to his past. Mr. Lewis hopes that by reaching out to Calloway, he can facilitate a reunion and provide Bud with the support he needs. This act reflects Mr. Lewis's kindness and desire to help Bud find his place in the world.