Section 65. The commissioner may make the commonwealth's records relating to the administration of this chapter available to the Federal Railroad Retirement Board and may furnish said board, at the expense of said board, such copies thereof as said board deems necessary for its purposes. The commissioner may afford reasonable cooperation with every agency of the United States charged with the administration of any unemployment insurance law. For the purpose of establishing and maintaining free employment offices, he may enter into agreements with any agency of the United States charged with the administration of an employment security law, and, as a part of any such agreement, the department may accept moneys, services or quarters as a contribution to the employment service accounts.