In 1842, being then twenty-two years old, and having saved a moderate sum of money, he formed a copartnership with Messrs. Case & Nelson, boat builders, of St. Louis, for the purpose of recovering steamboats and their cargoes which had been sunk or wrecked in the Mississippi. Accidents of this kind were then very common in those waters, and the business bade fair to be very profitable. The enterprise succeeded better than had been expected, and the operations of the wrecking company extended from Galena, Illinois, to the Balize, and into many of the tributaries of the great river. The parties interested in the scheme realized a handsome profit on their investments. Mr. Eads was the practical man of the concern, and worked hard to establish it upon a successful footing. In 1845 he sold out his interest in the company, and established a glass manufactory in St. Louis. This was the first enterprise of the kind ever attempted west of the Mississippi. Two years later, in 1847, he organized a new company for the purpose of recovering boats and cargoes lost in the Mississippi and its tributaries. This company started with a capital of fifteen hundred dollars. It was slow work at first, but a steady improvement was made every year, and in 1857, just ten years from the date of their organization, the property of the firm was valued at more than half a million of dollars. During the winter of 1856-'57, Mr. Eads laid before Congress a formal proposition to remove the obstructions from the western rivers and keep them open for a term of years, upon payment of a reasonable sum by the General Government. Had this proposition been accepted, the benefits thereby secured to all who were engaged in the navigation of those rivers would have been very great. A bill was reported in Congress authorizing the acceptance of Mr. Eads' offer, but was defeated through the influence of the Senators from Mississippi (Jefferson Davis) and Louisiana (J.P. Benjamin).
In 1857, Mr. Eads was compelled, on account of ill-health, to retire from business. He had earned a handsome fortune by his industry and enterprise, and could well afford to rest for a short time, preparatory, as it afterward proved, to the most important part of his whole career.
When the secession troubles began to agitate the country, toward the close of the year 1860, Mr. Eads cast the weight of his private and public influence on the side of the Union. He felt that the war, if it should come, would be a very serious affair for the West, as the prosperity of that section depends largely upon the absolute freedom of the navigation of the Mississippi. The Confederates well understood this, and prepared from the first to close the great river until their independence should be acknowledged by the General Government. Dr. Boynton, in his "History of the United States Navy During the Rebellion," thus describes the condition of affairs in the West, a proper understanding of which will show the reader the importance of the services subsequently rendered by Mr. Eads:
The main features of the rebel plan of war in the West were to seize and hold Missouri, and, as a consequence, Kansas and Nebraska, and thus threaten or invade the free States of the North-west from that point; to hold Kentucky and Tennessee, and, if possible, to cross the Ohio, and make the Northern States the theater of the war; or, in case they should be unable to invade the North, to maintain their battle line unbroken along the Ohio and through Missouri; to keep the great rivers closed, and thus holding back the North, and being secure within their own territory, at length compel the recognition of their independence. They certainly presented to the North a most formidable front, a line of defenses which was indeed impregnable to any means of assault which the Government at first possessed. No army could be moved into Tennessee by land alone, because the line of communication with a Northern base could not be held secure, and a defeat far from the Ohio would be the destruction of an army, and open the road for an invasion of Illinois, Indiana, and Ohio, and the destruction of their cities.
It was quite evident that no impression could be made upon the power of the rebellion in the West, until a firm foothold could be gained in Kentucky and Tennessee, and until the Mississippi could be wrested from the conspirators' control. It was clear that the whole seaboard might be regained, even to Florida, and yet the rebellion remain as dangerous as ever, if the rebels could hold the Mississippi River and the valley up to or near the Ohio.
France was looking with eager eyes toward Texas, in the hope of securing and extending her Mexican usurpation. England was ready to give all the assistance in her power to any step which would weaken the North; and had the rebels been pressed back from the seaports and the Northern Atlantic slope, they would have had it in their power, if still holding the Mississippi, the South-west, including Tennessee, and the great natural fortresses of the mountains, to have so connected themselves with Mexico and France as to have caused the most serious embarrassment. It became absolutely necessary to the success of the Government that the rebels' northern line of defenses should be broken through, and that the Mississippi should be opened to its mouth.
At first, and before the nature of the work was fully understood, the whole was placed under the direction of the War Department, as it was thought the few armed transports which would be needed would be a mere appendage of the army. The idea of a formidable river navy of a hundred powerful steamers did not in the beginning enter into the minds of any.
It was soon seen, however, that an entirely new description of craft was needed for this work. It was clear that the river boats, which had been built for the common purposes of freight and passage, were not capable of resisting the fire of heavy artillery, and that the batteries of the rebels could not be captured nor even passed by them. They could not even be safely employed alone in the transportation of troops, for they could be sunk or crippled by the field batteries that could be moved from point to point. The question of iron-clads was proposed, but with only the ocean iron-clads as a guide, who should conceive the proper form of an armored boat which could navigate our rivers and compete successfully with the heavy guns, rifled as well as smooth-bore, of the fortifications. It was by no means easy to solve this problem, but it was absolutely necessary that the attempt should be made.... These forts could only be reduced by the aid of gunboats, and these were almost literally to be created.
There was in the Cabinet of President Lincoln at this time a western man, intimately acquainted with the steamboat interest of the Mississippi. This was Edward Bates, the Attorney-General of the United States. He was an old friend of Mr. Eads, and felt assured that in case of war the services of that gentleman would be of the greatest value to the country. When it was found that hostilities could not be avoided, he mentioned the name of Mr. Eads to the Cabinet, and strongly urged that his services should be secured at the earliest possible moment. On the 17th of April, 1861, three days after Fort Sumter had fallen, he wrote to Mr. Eads, who was living in comfortable retirement, at St. Louis: "Be not surprised if you are called here suddenly by telegram. If called, come instantly. In a certain contingency it will be necessary to have the aid of the most thorough knowledge of our western rivers, and the use of steam on them, and in that event I have advised that you should be consulted."
A few days later Mr. Eads was summoned to Washington. Mr. Bates there explained to him in full a plan he had conceived for occupying Cairo, and endeavoring to hold the Mississippi by means of gunboats. Mr. Eads warmly indorsed the plan, and was introduced by Mr. Bates to the President and members of the Cabinet. When the plan was proposed to the Cabinet, the Secretary of War pronounced it unnecessary and impracticable, but the Secretary of the Navy was much impressed with it, and requested Mr. Eads to submit his views in writing, which was done. The paper embodied Judge Bates's general plan in addition to Mr. Eads's own views, and contained suggestions as to the kind of boats best fitted for service on the western rivers, and also in regard to the best points on those streams for the erection of land batteries. This paper was submitted to the Navy Department on the 29th of April, 1861, and was referred by the Secretary to Commodore Paulding, who reported in favor of its adoption.