Arlene and Ted Eckhart of Lehighton R. 2 are entertaining visitors from Australia. They are Kathy Bowman and her son, Luke, 13, of Brisbane, Queensland. The Bowmans traveled 2,700 miles so Kathy andArlene, who have been pen pals since 1958, could finally meet. The Eckharts took their guests to see the beautiful scenery of the Pennsylvania Dutch farmlands in Lancaster County. They also took trips to Gettysburg and Philadelphia.