CBS used to have a very good line up of shows on Saturday night.  They
started off with "Doctor Quinn, Medicine Woman" at 7PM (CST) and
finished up with "Walker,Texas Ranger" at 9 PM (CST).  But what was
the program that was shown at 8PM (CST)?

Ah, this brings back some memories!

"Dr. Quinn, Medicine Woman" ran from 1993 until 1998. "Walker, Texas
Ranger" ran from 1993 until 2001. Here's a brief history of what
filled the space between them.

In 1993, "Harts of the West" occupied the hour between the two shows.

Cached copy, In the 90s: Prime Time Schedule for 1993-1994
http://64.233.187.104/search?q=cache:VnBC_idxgNwJ:www.inthe90s.com/prim9394.shtml

Internet Movie Database: "Harts of the West"
http://imdb.com/title/tt0106022/

In 1994, two half-hour comedies occupied this slot: "The Five Mrs.
Buchanans" and "Hearts Afire."

Media Critica: Prime Time 1994-1995
http://www.mediacritica.net/courses/491/overheads/primetime94.html

Internet Movie Database: "The Five Mrs. Buchanans" 
http://imdb.com/title/tt0108775/

Internet Movie Database: "Hearts Afire" 
http://imdb.com/title/tt0103437/

In 1995, "Touched by an Angel" came to roost between the good Doctor
and the Texas Ranger.

Cached copy, In the 90s: Prime Time Schedule for 1995-1996
http://64.233.187.104/search?q=cache:5-IemSxP51gJ:www.inthe90s.com/prim9596.shtml

Internet Movie Database: "Touched by an Angel" 
http://imdb.com/title/tt0108968/

From 1996 through 1998, "Early Edition" settled into the timeslot.

Cached copy, In the 90s: Prime Time Schedule for 1996-1997
http://64.233.187.104/search?q=cache:5i3aIKDVlrAJ:www.inthe90s.com/prim9697.shtml

Cached copy, In the 90s: Prime Time Schedule for 1997-1998
http://64.233.187.104/search?q=cache:oHb3RibGDSsJ:www.inthe90s.com/prim9798.shtml

Internet Movie Database: "Early Edition" 
http://imdb.com/title/tt0115163/

"Dr Quinn" was canceled in 1998. Two made-for-TV movies were later aired: 

Internet Movie Database: Dr. Quinn Medicine Woman: The Movie
http://imdb.com/title/tt0196512/ 

Internet Movie Database: Dr. Quinn, Medicine Woman: The Heart Within 
 http://imdb.com/title/tt0285034/

My Google search strategy:

Google Web Search: "prime time schedule OR schedules for 1993..1998"
://www.google.com/search?hl=en&q=%22prime+time+schedule+OR+schedules+for+1993..1998%22

I hope this is precisely what you need. If anything is unclear or
incomplete, please request clarification; I'll be glad to offer
further assistance before you rate my answer.

Best regards,
pinkfreud

Thank you for the tip. I'm sorry you were not fully satisfied.

~pinkfreud