Curt Stemler (Stemmler)

Thanks Carole for the reply. I'm fairly new for Germany research .2-questions. 1.How or where would I get [in English ]the Tele Directory? I obtained his passage info from Germans to Amer. from some Soceity in Calf. for a donation,and his mothers name was on his marriage/ death certs. I know she used his name in passage here as she was not married to his father. She returned shortly and never came back that I know of.I figure either she was dying in 1911 as he returned a visit. 2.How much is a letter to Germany these days?
Thanks Again.Nannette