The New-York Tribune was an American newspaper, first established by Horace Greeley in 1841. Between 1842 and 1866, the newspaper bore the name New-York Daily Tribune. From the 1840s through the 1860s it was the dominant Whig Party and then Republican newspaper in the U.S. The paper achieved a circulation of approximately 200,000 during the decade of the 1850s, making it the largest in New York City and perhaps the nation. The Tribune's editorials were widely read and helped shape national opinion.