The text of the Gezer Calendar is as follows: (as translated by W. F. Albright Ancient Near Eastern Texts Relating to the Old Testament (ANET), p. 320)
His two months are (olive) harvest,
His two months are planting (grain),
His two months are late planting;
His month is hoeing up of flax,
His month is harvest of barley,
His month is harvest and feasting;
His two months are vine-tending,
His month is summer fruit.
It was found by R. A. S. Macalister during his extensive Gezer excavations between 1902 and 1909.