One of Jack Kerouac's last works was a letter to his 21-year-old nephew, written the day before he died, insisting his estate be left to his mother to keep it in the hands of his own flesh and blood.

"And not to leave a dingblasted . . . thing to my wife's one hundred Greek relatives," Kerouac wrote Paul Blake Jr., on Oct. 20, 1969.Twenty-five years later, in the midst of a resurgence in interest in Beat generation writers, Kerouac's estate is controlled by his wife's relatives. Now Blake has joined his blood kin in a long-deferred fight to get a share.

"I hope we can fully receive what is just . . . even though I know a lot of damage has been done" to the collection, Blake said Monday, announcing he was joining a lawsuit filed last year by Kerouac's only child, Jan Kerouac.

In the typed letter, made public years ago, Kerouac expressly said he didn't want his estate to go to his third wife, Stella Sampas, who nursed him through the final stages of alcoholism. He also said he planned to divorce her or annul their marriage.

When Kerouac died in Florida at age 47, state law required him to leave a third of his estate to his wife. Everything else went to his mother, Gabrielle Kerouac. When she died, she left everything to Sampas, who had cared for her after Kerouac's death.

Kerouac's original will ignored Jan, his daughter by his second wife. Kerouac only met her twice - including once for blood tests he demanded to prove his paternity.

Jan Kerouac decided to challenge the will left by her grandmother, which she says is a fake. If her grandmother had died without a will, her estate would have gone to Jan Kerouac and Blake.

Sampas died in 1990. Her family, which controls the estate, says Kerouac's letter to Blake is a fake.

While Kerouac's estate was only valued at about $53,280 when he died, it now has millions in earning power.

At issue are the pocket spiral notebooks, teletype rolls and parchment scrolls on which Kerouac recorded his first rumblings about the disaffection, alienation and rebellion in America after World War II.

The rough manuscripts for "On the Road" and some other works that came to define the Beat generation currently are on loan from the estate to the New York Public Library; notebooks and other material remain in the private collection of the estate.

One estimate values the estate at $10 million if sold piecemeal, which each side insists the other is intent on doing.

Jan Kerouac and Blake said the estate sold a Kerouac raincoat to actor Johnny Depp for $50,000.

Both sides say they intend to keep the collection intact in a single, public archive - although Kerouac's letter to Blake doesn't ask him to do so.