On item back: BHP120806 - 12/8/75-Boston: Some members of a group of about 300 longshoremen marched from Commonwealth Pier to the State House, 12/08/75. The longshoremen are upset with the way they insist the Boston Shipping Assoication has not held up their half of the contract. A contingent of 26 union local leaders met for 40 minutes with two assistant attorneys general to explain the grievances, and to persuade the state to investigate the shippers.