Johnson family attend Easter service at St. Barnabas Church; some press attend service, too; Ralph Doppler gives Johnsons model of LBJ Ranch house; driving tour of Hill Country; story of LBJ driving over rattlesnake; Easter lunch at the LBJ Ranch; guests at the LBJ Ranch to see wildflowers, have dinner, and helicopter to Green Mountain Ranch; drive around ranch; boating at Coca-Cola cove; Lady Bird recites from newspaper