54 A.2d 163 MASSACHUSETTS MUTUAL LIFE INSURANCE COMPANY v. DONALD KNOWLTON, Insurance Commissioner of the State of New Hampshire a. No. 3675.Supreme Court of New Hampshire Merrimack. Decided July 2, 1947. Since retaliatory tax statutes are invoked only in cases where an inequitable discrimination is clearly established, the provisions of R. L., c. 325, s. […]