CREATE TABLE table_203_376 (id DECIMAL, "no." DECIMAL, "name" TEXT, "term of office" TEXT, "president ( s )  served under" TEXT)

when did john p. walters end his term ?
SELECT "term of office" FROM table_203_376 WHERE "name" = 'john p. walters'
SELECT "term of office" FROM "table_203_376" WHERE "name" = 'john p. walters'