The Star Wars Fan Club

The horse's mouth as it were. Although the focus of the magazine, called Star Wars Insider, is obviously SW, the editor promises to "cover Indy and other Lucasfilm projects". This magazine won't plague you with improbable rumors, but you probably won't get the latest scoop either. However, if you're a fan of all things Lucas, this quarterly magazine is for you.
The official plug:
For only $9.95 a year, you can keep up to date with the latest projects from Lucasfilm. From The Young Indiana Jones Chronicles to the new Star Wars films, The Star Wars Fan Club is the official source of news. Each quarterly issue features full-color photos, exclusive interviews and articles as well as all the latest Lucasfilm collectibles! Join now and you'll receive our exclusive Star Wars membership kit, plus 4 quarterly issues of the Star Wars Insider magazine. One-year Membership price: $9.95/US, $12.00/CAN, $21.95/FOR.
The Star Wars Fan Club
P.O. Box 111000
Aurora, CO 80042
1-800-TRUE-FAN

The Indiana Jones Fan Club

All I know:
After one or two issues Joe Frese has turned over editing/writing responsibilities for the fan newsletter he started to Giacomo Bergamo (bergamo@mediaone.net).