[2] After education and vocational training in the U.S. and in Germany Otto K. Eitel volunteered in the Hotel Astor on Times Square in New York, which was founded in the same year by the German emigrants William C. Muschenheim (1855–1918) and Frederick A. Muschenheim, and where his uncle Max Eitel had also volunteered in 1904–1906.
As a member of the Schwabenverein "he has distinguished himself in the years after the Second World War in particular, being an avid supporter of charitable gifts donations to the old country".
During his trip to America, the German Chancellor Konrad Adenauer came on April 14, 1953, to Chicago and stayed twice in the Bismarck Hotel.
On this occasion, he met the president of the Bismarck Hotel Otto K. Eitel and handed him the Great Merit Cross.
[6] Together with his wife, Otto K. Eitel published in 1944 for the first time their music calendar From Bach to Gershwin, "a beautiful edition showing graphically the arc of years, which spans the lives of the greatest composers in the world since the 18th century".