Background: William Randolph Hearst Sr. (; April 29, 1863 - August 14, 1951) was an American businessman, politician, and newspaper publisher who built the nation's largest newspaper chain and media company Hearst Communications and whose flamboyant methods of yellow journalism influenced the nation's popular media by emphasizing sensationalism and human interest stories. Hearst entered the publishing business in 1887 after being given control of The San Francisco Examiner by his wealthy father.
Context: Hearst won two elections to Congress, then lost a series of elections. He narrowly failed in attempts to become mayor of New York City in both 1905 and 1909 and governor of New York in 1906, nominally remaining a Democrat while also creating the Independence Party. He was defeated for the governorship by Charles Evans Hughes. Hearst's unsuccessful campaigns for office after his tenure in the House of Representatives earned him the unflattering but short-lived nickname of "William 'Also-Randolph' Hearst", which was coined by Wallace Irwin. Hearst was on the left wing of the Progressive Movement, speaking on behalf of the working class (who bought his papers) and denouncing the rich and powerful (who disdained his editorials). With the support of Tammany Hall (the regular Democratic organization in Manhattan), he was elected to Congress in 1902 and 1904. He ran for the Democratic nomination for president in 1904, losing to a conservative New York judge, Alton B. Parker. Breaking with Tammany in 1907, Hearst ran for mayor of New York City under a third party of his own creation, the Municipal Ownership League). Tammany Hall exerted its utmost to defeat him. An opponent of the British Empire, Hearst opposed American involvement in the First World War and attacked the formation of the League of Nations. His newspapers abstained from endorsing any candidate in 1920 and 1924. Hearst's last bid for office came in 1922 when he was backed by Tammany Hall leaders for the U.S. Senate nomination in New York. Al Smith vetoed this, earning the lasting enmity of Hearst. Although Hearst shared Smith's opposition to Prohibition, he swung his papers behind Herbert Hoover in the 1928 presidential election. Hearst's support for Franklin D. Roosevelt at the 1932 Democratic National Convention, via his allies William Gibbs McAdoo and John Nance Garner, can also be seen as part of his vendetta against Smith, who was an opponent of Roosevelt's at that convention.
Question: Where did he speak?

Answer:
His newspapers