11.   He died after a brief illness, his family said.

12.   He died after a brief illness, said a partner in his old firm, Francis Morison.

13.   He died after a brief illness, said Mary Jack Wald Associates, his literary representative.

14.   He had a brief illness, his wife, Linda, said.

15.   He had suffered a brief illness, his family said.

16.   He had a brief illness, according to the Transport Workers Union of America.

17.   He had a brief illness, the conference said.

18.   He died after a brief illness, said Ed Robalisky, president of Gear Broadcasting, a subsidiary of Gear Telecommunications, a wireless cable operator in New England.

19.   He died after a brief illness, said his son, Andrew.

20.   He died at his home in Rye, N.Y., after a brief illness, his family said.