The Military Decree of Amphipolis (ca. 200 BC) is a Macedonian Greek inscription of two marble blocks, that originally contain at least three columns of text. It preserves a list of regulations governing the behaviour and discipline of the Macedonian army in camp.

References:
Military Decree of Amphipolis - Searchable Greek Inscriptions at the Packard Humanities Institute 

Dr. Adrian Lamkin talks about the Greek language - from its early rise, to the spread of the language by Alexander the Great, to its influence today. 

The lecture was held at Eastern Illinois University at the "Symposium of Ancient Greece" on November 2, 2012.

Dr. Adrian Lamkin formerly served on the religion faculties of Georgetown College (KY) and William Jewell College (MO) and as professor of church history at New Orleans Baptist Theological Seminary.
 

A lecture delivered at Peninsula College by Wesley Cecil, PhD. The lecture covers the origins, development, and influence of the Greek language and related civilization.

Egypt, Ptolemaic Period, 196 BCE

The inscriptions on the Rosetta Stone, apparently composed by the priests of Memphis, summarize benefactions conferred by Ptolemy V Epiphanes (205–180 BCE) and were written in the ninth year of his reign in commemoration of his accession to the throne. Inscribed in two languages, Egyptian and Greek, and three writing systems, hieroglyphics, demotic script (a cursive form of Egyptian hieroglyphics), and the Greek alphabet, it provided a key to the translation of Egyptian hieroglyphic writing.

Also see:
> British Museum
> Encyclopedia Britannica