This may not be the earliest written account of Germanic peoples, but the Roman historian Tacitus wrote "Germania" in c. 98 AD, an ethnographic book about the Germanic tribes which roamed the land north of the Roman Empire.
The first written account in the Bible is Exodus.
The Choctaw Indians were the first people in the Oklahoma area, I can find no mention of an first official account.
Thucydides
Andrew Jacke Townsend has written: 'The Germans of Chicago' -- subject(s): Germans
Thucydides
Howard J. Brumley has written: '\\' -- subject(s): History, Russian Germans, Germans
Lucius Burrie Swift has written: 'Germans in America' -- subject(s): Germans, Civilization.
John Mathias Brown has written: 'A brief sketch of the first settlement of the county of Schoharie' -- subject(s): Germans, History
James Ohio Pattie
Jerzy Kurnatowski has written: 'The Poles in Germany and the Germans in Poland' -- subject(s): Germans, Minorities, Poles
Marie Miller Olson has written: 'A bibliography on the Germans from Russia' -- subject(s): Bibliography, Catalogs, Germans, New York Public Library, Russian Germans
THE ALLMOUNTAINS CLUB WAS THE FIRST TO RECORD ALL OF THEIER HISTORY