Why does Mr Lewis send a telegram to Herman E Calloway?

Mr. Lewis sends a telegram to Herman E. Calloway to inform him about the arrival of a young boy named Bud, who is in need of assistance and has claimed to be related to Calloway. The telegram serves as a way to connect Bud with his potential family and to alert Calloway of the situation. This act reflects Mr. Lewis's sense of responsibility and compassion towards Bud's plight.