Q. How about some information on Tracy Nelson, of "The Father Dowling Myseries"? - A.L.H., Auburn, N.Y.

A. Nelson, 27 on Oct. 23, has lots of show business connections. She's the daughter of Rick Nelson and Kristen Harmon, granddaughter of Ozzie and Harriet Nelson and Tom and Elyse Harmon. Mark Harmon is her uncle and her twin younger brothers, Matthew and Gunnar, front the hit rock act Nelson. She was born in Santa Monica, Calif., attended private Los Angeles area schools and studied dance 14 years. She made her acting debut as a regular on "Square Pegs" in 1982; her second series was "Glitter" in 1984. She's married to actor William R. Moses.Q. Tell me about Chris Wolf of "The Guys Next Door": birthday, previous acting jobs, birthplace, current residence. - K.F., Aloha, Ore.

A. Wolf, a native of Portland, Ore., was 19 last May 8. At 18, he went to Hollywood and made his movie bow in "Cops." His only other credits are a toy commercial and a bit on "Just the Ten of Us." He lives in the Los Angeles area.

Q. I'd like some background on Cleavon Little. I remember him in a series but no one knows what it was. - E.F., St. Clair Shores, Mich.

A. Little was in "Temperatures Rising," 1972-74. He also did the soap "Another World" in 1982. He almost had another series in 1979. "Mr. Dugan," an ABC sitcom about a black congressman, was yanked by the network just before it bowed because several black politicians complained. Little is best known for his stage work ("Purlie") and movies ("Blazing Saddles").

Q. Is James Daly Tyne Daly's father? When did he die and how? - J.O., Philadelphia.

A. Actor Daly, best known for "Medical Center," seen 1969-76, died of an apparent heart attack in 1978. He was 60. He's also the father of actor Timothy Daly, now in NBC's sitcom "Wings."

Q. When will the miniseries "Winds of War" and "War and Remembrance," based on the novels of Herman Wouk, be repeated? When will they be available on tape? No video rentals here carry it. They claim they're too long. - R.C.S., Westminster, Calif.

A. They are. Few miniseries are converted to consumer tape because of the cost - usually several hundred dollars for a 5- or 6-parter - and few takers. "Winds," seen first in 1983, was 18 hours long. It was repeated in 1986. "War," seen in 1988, was 17 hours long and ABC still has the rights to a repeat. The best bet to see them again is on cable.

Q. Where can I write Bob Vila of "This Old House" on PBS? - J.K.L., Chicago.

A. Vila and "House" parted two seasons ago because Vila was doing commercials for a competitor of a major underwriter of the show, according to a PBS spokeswoman. Steve Thomas is the new host of "House." You can write that show: WGBH-TV, 125 Western Ave., Boston, Mass. 02134. Meantime, Vila signed up with Sears for commercials and a syndicated show, "Home Again with Bob Vila." Write: Oglivy & Mather PR, 676 St. Clair, Chicago, Ill. 60611

Q. What has happened to actress Lynda Day George? - C.J., Detroit.

A. George, now 46, has concentrated on directing in recent years.

Q. Who played E. Z. on "Three's a Crowd" with John Ritter? Is he the one playing Perry Mason's young assistant? - M.R., Tucson, Ariz.

A. Alan Campbell was E.Z. He is assisting a lawman, but it's William Conrad in CBS' "Jake and the Fatman." William Katt, best known for "The Greatest American Hero," was Mason's aide, Paul Drake Jr. Katt left for his own show, "Top of the Hill" last season, but it was a quick flop.

Q. I've bet $100 that Dick Clark's "American Bandstand" was on TV five days a week, Monday-Friday. My friend says it was only on Saturday afternoons. - B.K., Van Nuys, Calif.

A. Your friend loses two ways. It was on five days a week early in its long run on ABC, 1957-63. And it had a 13-week run on ABC in prime time in 1957. "Bandstand" started as a local show in Philadelphia in 1952 with Bob Horn as host. Dick Clark took over in 1956. In 1957, ABC launched it as a network show, changed the name to "American Bandstand' and it ran until 1986, one of TV's longest-running shows. In 1987, Clark converted it to a syndicated series.

Q. What was the series with Sally Field and John Davidson? It was on the air between "Gidget" and "The Flying Nun." - M.D., Farmington Hills, Mich.

A. "The Girl with Something Extra" was seen 1973-74, the fourth and last of Field's TV series. "Gidget" (1965-66), "The Flying Nun" (1967-70) and "Alias Smith and Jones" (1971-73) were the others.

Q. Is Myrna Loy alive? What can you tell me about her personal life? I'm a great fan. - B.C., Wichita, Kan.

A. She was born Myrna Williams on Aug. 2, 1905, in Raidersburg, Mont., near Helena, and moved to Los Angeles as a teenager. Her movie bow was in a bit in 1925's "Ben Hur." Her last was 1978's "The End." During World War II, Loy took leave of her career to devote full time to Red Cross work. She has been a political activist and worked with the United Nations for years. She was married four times.

Q. A few years ago on PBS Hal Holbrook did Mark Twain. It was an outstanding performance. I have tried to purchase this video or get the local PBS station to show it but they have refused. What can I do? - A.F., Boca Raton, Fla.

A. Holbrook has been performing his one-man show "Mark Twain Tonight" since 1954 and has done over 5,000 performances at universities, clubs and in theaters. The first time he did it on TV was on CBS in 1966. There is a video. Check your video store. But remember, just because you saw something on TV doesn't mean it's on tape.

Q. How many times was Tyrone Power married and how many children did he have? When did he die? - P.G.S., Austin, Texas.

A. Power was married three times and had three children, daughters Romin and Taryn and son Tyrone Power. He was 45 when he died of a heart attack in Spain while filming "Solomon and Sheba."

Q. I'd like to know if Paulette Goddard is still alive. I always liked her. - D.L.B., Detroit.

A. Goddard was 70 when she died in April at her home in Switzerland.

Q. Am I wrong in thinking Gordon Lightfoot is a Canadian? I seem to remember his parents were big stars on Canadian TV. - E. Z., Portland, Ore.

A. Lightfoot was born and raised in the small town of Orillia, Ont., Canada. After he graduated from high school in 1958, he went to Los Angeles to study music. He turned folk singer in the 1960s when he learned guitar and encouraged by the Canadian folk team Ian and Sylvia. He returned to Canada, which has remained his base.

Q. I recently saw two movies which starred the fantastic James Mitchell, who plays Palmer Cortlandt on "All My Children." He was a fabulous dancer. Are there many movies in which he danced? Also, what was the movie, seen in "That's Dancin"' in which he danced in a western outfit? - Mrs. C.G., Niagara Falls, N.Y.

A. Mitchell was dancer first, actor later. He has danced with the American Ballet Theater, the Agnes DeMille Dance Theater and in many stage musicals, as well as movie musicals. Among the movies: "The Bandwagon," "Deep in My Heart" and, in the "That's Dancin"' excerpt, "Oklahoma!" in which he danced Curley in the Dream Sequence ballet.

Q. Who plays Tad Martin in "All My Chidren" and what's his address? - D.V.C., Troy, Mich.

A. Michael Knight is Tad. Currently, he's in his second time around as the character. He played Tad from 1982-86, left for prime-time TV and returned in 1988. Write: ABC-TV, 77 W. 66th St., New York, N.Y. 10023.

Q. I'm a big fan of "General Hospital" and I can't find the address to write its stars. - K.N., Mount Laurel, N.J.

A. Write: ABC-TV, 2040 Avenue of the Stars, Los Angeles, Calif. 90067.

- Send your questions to Celebrity Questions, Detroit Free Press, Detroit, Mich. 48231.