Midlife
Business earnings permitted Field to partially retire at the age of 34 with a fortune of $250,000 (equal to $8,958,333 today) and build a home in Gramercy Park. In 1853, Field financed an expedition to South America with his artist friend Frederic Edwin Church, during which they explored present-day Ecuador, Colombia, and Panama. They followed the route taken by Alexander von Humboldt over 50 years earlier. Church's sketches of the landscapes and volcanoes on this trip, and on a subsequent trip in 1857 with artist Louis Rémy Mignot, inspired some of his most famous paintings upon his return to New York. Field's list of "Places of Interest to Visit" in South America reflected his interests, including business interests: bridges, volcanoes, waterfalls, and cities, as well as gold mines and the emerald mines of Muzo.
Field turned his attention to telegraphy after he was contacted in January 1854 by Frederic Newton Gisborne, a British engineer, who aimed to establish a telegraph connection between St. John's, Newfoundland and New York City, started the work, but failed due to the lack of capital. Later that year he, with Peter Cooper, Abram Stevens Hewitt, Moses Taylor and Samuel F.B. Morse, joined the so-called Cable Cabinet of entrepreneurs, investors and engineers. Through this Cable Cabinet, Field became instrumental in laying a 400-mile (640 km) telegraph line connecting St. John's, Newfoundland with Nova Scotia, coupling with telegraph lines from the U.S. American investors took over Gisborne's venture and formed a new company called the New York, Newfoundland, and London Telegraph Company (N.Y.N.L.T.C.) after Field convinced the Cable Cabinet to extend the line from Newfoundland to Ireland .
The next year the same investors formed the American Telegraph Company and began buying up other companies, rationalizing them into a consolidated system that ran from Maine to the Gulf Coast; the system was second only to Western Union's.
In 1857, after securing financing in England and backing from the American and British governments, the Atlantic Telegraph Company began laying the first transatlantic telegraph cable, utilizing a shallow submarine plateau that ran between Ireland and Newfoundland. The cable was officially opened on August 16, 1858, when Queen Victoria sent President James Buchanan a message in Morse code. Although the jubilation at the feat was widespread, the cable itself was short-lived: it broke down three weeks afterward, and was not reconnected until 1866.
During the Panic of 1857, Field's paper business suspended, and Peter Cooper, his neighbor in Gramercy Park, was the only one that kept him from going under.
On August 26, 1858, Field returned to a triumphant homecoming at Great Barrington, Massachusetts, saluting this Massachusetts boy made good. "This has been a great day here," trumpeted The New York Times, "The occasion was the reception of the welcome of Cyrus W. Field, Esq., the world-renowned parent of the Atlantic Telegraph Cable scheme, which has been so successfully completed."
Field's activities brought him into contact with a number of prominent persons on both sides of the Atlantic – including Lord Clarendon and William Ewart Gladstone, the British Finance Minister at the time. Field's communications with Gladstone would become important in the middle of the American Civil War, when three letters he received from Gladstone between November 27, 1862, and December 9, 1862, caused a furor, because Gladstone appeared to express support of the secessionist southern states in forming the Confederate States of America.
In 1866, Field laid a new, more durable trans-Atlantic cable using Brunel's SS Great Eastern. Great Eastern was, at the time, the largest ocean-going ship in the world. His new cable provided almost instant communication across the Atlantic. On his return to Newfoundland, he grappled the cable he had attempted to lay the previous year and made it into a backup wire to the main cable.
In 1867, Field received a gold medal from the U.S. Congress and the grand prize at the International Exposition in Paris for his work on the transatlantic cable.