The Organization and Procedure of the Washington Radiotelegraph Conference
The procedure followed by the United States government in making the necessary arrangements for the Washington Radiotelegraph Conference and in extending invitations to the several governments was largely determined by the provisions of the London Convention of 1412. By the terms of this convention only those governments which were parties to it were permitted to participate in subsequent conferences with the right to vote. Consequently, the United States extended invitations only to those governments which had signed, adhered to, or acceded to the London Convention. Pursuant to securing a list of states to which invitations should be sent, the Department of State secured through the American Embassy at London a record of the ratifications of the Convention of 1912 that had been deposited at the British Foreign Office.