I took snapshots of some of the interior art from the Fantasy Forest books. The picture quality isn't the best, but I tried.
Mario Macari, Jr.'s art from The Ring, the Sword, and the Unicorn
Michael Fishlel's art from Ruins of Rangar
Pamela Summertree's art from Dungeon of Darkness
Mario Macari, Jr.'s art from Star Rangers and the Spy