29 Del. C. § 102

The consent of the General Assembly is given to the purchase by the government of the United States, or under authority of such government, of any tract, piece or parcel of land, not exceeding 10 acres in any 1 place or locality, for the purpose of erecting thereon lighthouses and other needful public buildings whatsoever and of any tract, piece or parcel of land, not exceeding 100 acres in any 1 place or locality, for the purpose of erecting thereon forts, magazines, arsenals, dockyards and other needful buildings, from any individuals, bodies politic or corporate within the boundaries or limits of the State; and all deeds, conveyances or title papers for the same shall be recorded as in other cases upon the land records of the county in which the land so conveyed may be situated and, in like manner, may be recorded a sufficient description, by metes and bounds, courses and distances of any tracts or legal divisions of any public land belonging to the United States, which may be set apart by the general government for any or either of the purposes before mentioned by an order, patent or other official document or papers so describing such land. The consent herein given is in accordance with clause 18, § 8 of Article I of the Constitution of the United States and with the acts of Congress in such cases made and provided.