Germania & The Life of Cnæus Julius Agricola by Tacitus, 98 CE

"The Germania, written by the Roman historian Publius Cornelius Tacitus around 98 AD and originally entitled On the Origin and Situation of the Germans (Latin: De origine et situ Germanorum), is a historical and ethnographic work on the Germanic peoples outside the Roman Empire. 

The Germania begins with a description of the lands, laws, and customs of the Germanic people (chapters 1–27); it then describes individual peoples, beginning with those dwelling closest to Roman lands and ending on the uttermost shores of the Baltic, among the amber-gathering Aesti, the Fenni, and the unknown peoples beyond them."

-summary taken from wikipedia

"The Agricola (Latin: De vita et moribus Iulii Agricolae, lit. On the life and character of Julius Agricola) is a book by the Roman historian Tacitus, written c. AD 98, which recounts the life of his father-in-law Gnaeus Julius Agricola, an eminent Roman general and Governor of Britain from AD 77/78 – 83/84. It also covers, briefly, the geography and ethnography of ancient Britain. As in the Germania, Tacitus favorably contrasts the liberty of the native Britons to the corruption and tyranny of the Empire; the book also contains eloquent and forceful polemics against the rapacity and greed of Rome.

The text survived by chance in a single codex ascertained by Poggio Bracciolini to be in a German monastery (Hersfeld Abbey), and eventually secured by the humanist Niccolò de' Niccoli. Of that original, only part survives today, but several copies of the complete text were made in the 15th century."

-summary taken from wikipedia

Germania source:

https://facultystaff.richmond.edu/~wstevens/history331texts/barbarians.html

 

Agricola source:

http://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.02.0081