Otto Riethmüller

Otto Riethmüller (26 February 1889 – 19 November 1938) was a German Lutheran minister, writer, and hymnwriter. He was the president of Protestant youth organisations from 1928, published songbooks, and was a leading member of the Confessing Church. He designed the Protestant youth organization's logo, the Cross on the Globe, which is still used today. Provided by Wikipedia