In conformity to provisions contained in the river and harbor act approved March 3, 1875, granting to James B. Eads and his associates authority to use, for the construction of jetties at the mouth of the Mississippi River, any materials on the public lands of the United States that shall be suitable for and may be needed in said works, under such regulations as the Secretary of War shall prescribe, it is hereby ordered and directed--
1. That the general supervision of all matters properly appertaining to the grant therein made is placed in the officer of engineers, Major C. B. Comstock, detailed by the Secretary of War, under the provisions of the said act, to report to him "the depth of water and width of channel secured and maintained from time to time in said channel, together with such other information as the Secretary of War may direct."
2. Protection of the interests of the United States so far as the taking of material is concerned .--Said Eads and his associates shall, prior to taking material from any public lands, obtain authority to do so from the Secretary of War, their applications specifying the kinds and amounts of material they wish to take from each subdivision of the public lands; and they shall at once cease from such taking on being notified that the authority is withdrawn.
3. Protection of the interests of the United States so far as structures are concerned .--Said Eads and his associates and contractors are authorized to erect, at their own expense, such shops, dwellings, storehouses, and wharves on the military reservation at the mouth of the Mississippi as may be necessary for the prosecution of the work, and shall furnish a list and plan showing the location of the same to the Secretary of War; but these shall be erected in such a way and at such places as not unnecessarily to interfere with navigation or any other interest in which the United States is concerned, whereof the Secretary of War shall be the judge. At his direction any such structure shall be at once removed.
4. Protection of James B. Eads's interests .--No person save said Eads and his contractors shall erect any building, tent, or other habitation on the military reservation at the mouth of the Mississippi River. Any person so doing may be summarily ejected by the United States marshal or his deputy. But as authority has already been given to James B. Eads by the Secretary of War to collect the material aforesaid until he should be furnished with the regulations as now herein given, the said Ears is authorized to continue collecting materials under that authority until the 1st day of September, 1875, after which time these regulations will go into effect.
Ulysses S. Grant, Executive Order Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/204266