LBJ & Lady Bird to National City Christian Church; breakfast together at White House; LBJ attends meeting; Lady Bird watches television; Johnsons & guests helicopter to Camp David; Lady Bird takes nap and visits with Lynda Johnson; Johnsons bowl with guests; dinner; bridge game; conversation about aid for India, war on poverty at home, Vietnam and China; Lady Bird talks on telephone with Luci and Pat Nugent, who are snowed in at Waukegan; Luci is expecting baby in June