William Moseley Swain was a 19th century American newspaperjournalist, publisher, editor and newspaper owner and businessman. He was one of the founders and proprietors of the most recent daily newspaper in Philadelphia, The Public Ledger established in 1836 and also served as editor. The paper was the first daily to establish a pony express style delivery service in the late 1830s and through the next few decades for routing their reporters/correspondents dispatches from throughout the eastern states. The system was made famous 25 years later by the United States Post Office Department in 1861 with a series of riders and horses across the Western United States from Missouri to California, at the same time of the construction of the Western Uniontelegraph line, coast to coast. The Ledger and its younger sister paper established a year later by both Abell and Swain in 1837, The Sun of Baltimore in neighboring Maryland to the southwest, were both of the first publications to use the new amazing technology of the electric telegraph invented by their friend, former artist/painter Samuel F. B. Morse, and using his Morse Code. It was first tested on a line between Baltimore at the Baltimore and Ohio Railroad's old first main terminal stationon the waterfront Pratt Street in Baltimore following the right-of-way and tracks of the B. & O. Railroad's recently completed Washington Line between the two major cities to the Supreme Court chambers on Capitol Hill in the United States Capitol in the national capitalcity of Washington, 40 miles southwest in 1844. Both The Sun and The Ledger made extensive use of the new revolutionary quick communications system only three years later to transmit war news of the events and battles in the Mexican–American War, thousands of miles to the far southwest along the Gulf of Mexico coast and interior of Mexico as the hostilities extended into the capital of Mexico City, until the surrender. In 1847, the Philadelphia Public Ledger was printed on'he first rotary press ever built. In May 1845, Swain was one of the incorporators of the pioneering Magnetic Telegraph Company, and from 1850, served as its president. In this company, he was an associate of the inventor, Samuel F. B. Morse, and the chief promoter, Amos Kendall, who was another former newspaperman. Swain was buried in The Woodlands Cemetery in Philadelphia, Pennsylvania. Swain's son, William J. Swain founded a newspaper titled The Public Record in 1870, which later became The Philadelphia Record.
