[Hammock Parties]

I don't know if it's in your copy but it's in mine. I have all three LOTR books collected in one volume + appendices. Its under "The Tale of Years."

If you wanna know about it, just read wiki though.

http://en.wikipedia.org/wiki/Sauron

Around the year 1050,[37] a shadow of fear fell on the forest later called Mirkwood. As would later become known, this was the first sign of Sauron's remanifestation, but for many years he was not recognized. He was known (as in The Hobbit) as the Necromancer. He established a stronghold called Dol Guldur, "Hill of Sorcery", in the southern part of the forest not far from Lórien.

Shortly after the shadow fell upon the forest, the Valar sent five Maiar to oppose this growing power. They took the form of Wizards, the most prominent being Gandalf and Saruman. By about 1100, "the Wise" (the Wizards and the chief Elves) became aware that an evil power had made a stronghold at Dol Guldur. Initially it was assumed that this was one of the Nazgûl rather than Sauron himself. About the year 1300, the Nazgûl did indeed reappear. In the ensuing centuries, the chief of the Nazgûl, the Witch-king of Angmar, repeatedly attacked the northern realm of Arnor, first in 1409 and finally overrunning and effectively destroying the realm in 1974. Though driven from the north in the following year by the Elves and forces from Gondor, the Witch-king retreated to Mordor and gathered the Nazgûl there. In 2000, the Nazgûl issued from Mordor to besiege the city of Minas Ithil in the mountains bordering Mordor. The city fell in 2002, and became known as Minas Morgul. With the city the Nazgûl also captured the palantír of Minas Ithil, one of the seven seeing stones that Elendil's people had brought with them from Númenor at the eve of the Downfall.

In this same period, the Dwarf kingdom in Moria was destroyed by a Balrog, who slew King Durin VI and his son Náin I and drove the dwarves away. In the centuries that followed dragons attacked other settlements of dwarves in the north. (Whether Sauron had any part in these attacks on the Dwarves is unknown.) In this time many of the surviving Noldorin Elves became weary of Middle-earth and departed for Valinor.

As the power of Dol Guldur grew, the Wise came to suspect that the controlling force behind the Witch-king and the other Nazgûl was indeed their original master, Sauron. In 2063, Gandalf went to Dol Guldur and made the first attempt to learn the truth, but Sauron retreated and hid in the East. It would be almost 400 years before he returned to his stronghold in Mirkwood, and his identity remained undetermined.

Sauron finally reappeared with increased strength in 2460. About the same time, the long-lost Ruling Ring was finally recovered from the River Anduin, found by a Stoor Hobbit[38] named Déagol. Déagol's friend and relative[39] Sméagol coveted the Ring and killed Déagol to get it, and was eventually corrupted by it, becoming the creature Gollum. Banished by his family, he took the Ring, which he called his "Precious", and hid in the Misty Mountains.

In 2850, Gandalf made a second attempt to spy out Dol Guldur. Stealing into the stronghold, he was finally able to confirm the identity of its lord, later reporting to the White Council of Elves and Wizards that Sauron had returned. Saruman dissuaded the Council from acting against Sauron, hoping thereby to acquire the One Ring for himself.

Eventually, the Wise put forth their might and drove Sauron from Mirkwood in 2941. During the White Council's delay he had, however, prepared his next move, and was willing to abandon Dol Guldur.

Just before Sauron fled Dol Guldur, the hobbit Bilbo Baggins, on an improbable adventure with a party of Dwarves, stumbled across the Ring deep within the Misty Mountains. After his quest was over, Bilbo brought the Ring back to Hobbiton in the Shire. Decades later, he passed it on to his heir, Frodo.

By then, Sauron's power had recovered to the point that he was able to extend his will over Middle-earth. The Eye of Sauron, as his attention and force of will was perceived, became a symbol of oppression and fear. Following his expulsion from Dol Guldur, he returned to Mordor in 2942, openly declared himself nine years later, and started raising Barad-dûr anew. In preparation for a final war against Men and Elves, he bred armies of monstrous Orcs, the Uruk-hai.