In the first or second year of the administration of President Adams, Andrew Ellicott, then employed in designating, in conjunction with the Spanish authorities, the boundaries between the territories of the United States and Spain, under the treaty with that nation, communicated to the executive of the United States papers and information respecting the subjects of the present inquiry, which were deposited in the office of State. Copies of these are now transmitted to the House of Representatives, except of a single letter and a reference from the said Andrew Ellicott, which being expressly desired to be kept secret, is therefore not communicated, but its contents can be obtained from himself in a more legal form, and directions have been given to summon him to appear as a witness before the court of inquiry. A paper "on the commerce of Louisiana," bearing date of the 18th of April, 1798, is found in the office of State, supposed to have been communicated by Mr. Daniel Clark, of New Orleans, then a subject of Spain, and now of the House of Representatives of the United States, stating certain commercial transactions of General Wilkinson, in New Orleans; an extract from this is now communicated, because it contains facts which may have some bearing on the questions relating to him. The destruction of the war-office, by fire, in the close of 1800, involved all information it contained at that date. The papers already described, therefore, constitute the whole information on the subjects, deposited in the public offices, during the preceding administrations, as far as has yet been found; but it cannot be affirmed that there may be no others, because, the papers of the office being filed, for the most part, alphabetically, unless aided by the suggestion of any particular name which may have given such information, nothing short of a careful examination of the papers in the offices generally, could authorize such affirmation.