She never appeared on the show but....
Well, Just who the heck is Raque Welsh anyway?

Raquel Welsh - American actress

Raquel Welsh on the Dick Cavett Show

Birthday
September 5th 1940 - Chicago, Illinois, USA

Birth Name
Jo Raquel Tejada

Spouses
Richard Palmer
(17 July 1999 - present) (separated)
André Weinfeld
(5 July 1980 - 1990) (divorced)
Patrick Curtis
(14 February 1967 - 1972) (divorced)
James Westley Welch
(8 May 1959 - 1964) (divorced) 2 children

Known Facts
Graduated La Jolla High School, La Jolla, California. [1957]
Miss Fairest of the Fair, San Diego, Ca. [1957]
Mother of Tahnee Welch.
Born at 2:04pm-CDT
Chosen by Empire magazine as one of the 100 Sexiest Stars in film history (#18). [1995]
Her father is Bolivian.
Turned down the lead in Barbarella (1968) - which eventually went to Jane Fonda.
Husband Richard Palmer is a restaurateur.
She was fired from Cannery Row (1982) and replaced by Debra Winger. She then sued MGM and won a $10 million judgement.
Among her many beauty contest titles were "Miss Photogenic", "Miss Contour" and "Miss Maid of California" - all won while she was in her teens.
30 August 2003 - Broke her wrist in a Los Angeles car crash.
Measurements: 37C-22 1/2-35 1/2 (measured in 1967), 37-23 1/2-35 1/2 (from 1980 fitting), 37D-26-36 (@ age 43 in 1985), (Source: Celebrity Sleuth magazine)
Mentioned in the theme song of the 1980s TV hit "The Fall Guy" (1981).
Had a notorious backstage feud with the indomitable Mae West on the set of Myra Breckinridge (1970).
Auditioned for the role of Mary Ann in "Gilligan's Island" (1964).

 

In 1974, Raquel Welch won a Golden Globe for Best Motion Picture Actress in a Musical or Comedy for 'The Three Musketeers'.

The Cover of the December 1979 "christmas issue" PLAYBOY. Sex stars of 1979 along with Candace Collins and Raquel Welch layouts in this thick christmas issue.

Mother, Jugs & Speed (1976)