Neat Link: The Gezer Calendar
[update 7/23/08: I am substituting a new active link (click here) for the broken link previously given at this spot]
The tablet is a well-known archaeological find, which outlines the yearly agricultural cycle. It was found at Tel-Gezer, and dates from the 9th century BCE.
The Gezer Calendar witnesses to how attentive ancient Israel would have to have been to the proper cycle of plowing, planting, and harvesting a whole variety of crops in order to survive (see Proverbs 20:4). You can see the cycle at issue in the Gezer Calendar in action in the agricultural references at Ruth 1:22 and 2:23.
UPDATE: Check out this WebSite (HT: Tyler Williams) that supplies the reconstructed paleo-Hebrew characters for each verse of the Bible.