My collection of Landers magazines is growing considerably, many of which I have bought over the Internet The articles are listed in chronological order. Pink balls indicate articles about Judy, red means the article is about Audrey, and purple is for both.
Currently, there are thirty-five articles available:

Movie Mirror Super Special 1980
Your TV Magazine July 16, 1980 (Australia)
Great Looks II Health and Beauty Guide 1981
Movie Screen Yearbook 1981
TV Star Special 1981
Starweek magazine (supplement to the Toronto Saturday Star) February 14, 1981
Us magazine February 17, 1981
US magazine March 31, 1981
Gossip Magazine April 1981
Teen April 1981
Modern People July 1981
Runner's World July 1981
TV Guide July 18, 1981
16 Magazine November 1981
Us magazine December 8, 1981
TV Week December 16, 1981 (Australia)
Saga December 1981
Shape December 1981
Family Weekly June 13, 1982
Playboy January 1983
TV Week January 29, 1983 (Australia)
TV Guide May 28, 1983
Your Health June 21, 1983
Woman's World 1983
Wochen End March 17, October 6, November 10 and December 21, 1983
Soap Opera Digest March 13, 1984
Slimmer: The 20-Minute Body May 1984
Lundi March 2, 1985
Us Magazine August 26, 1985
Trim & Fit Winter 1985
Story (Dutch magazine) March 14, 1986
Los Angeles Drive Guide September 1986
Modern Screen 1986 (Anyone know the month?)
Soap Opera Update June 4, 1990
Daytime TV November 1990
Fitness Plus May 1991
Hello Magazine (UK) circa August 1994