Alan Hathway becomes managing editor, a post he will hold for 20 years. The newspaper price goes from three cents to four cents in some parts of Nassau County. Newsday establishes its first edition in Suffolk County, in the towns of Babylon and Islip. 1946-1950 Alicia asks Harry to sell her a share in Newsday. Newsday is incorporated.
Presses start in the new Garden City plant.
North Suffolk edition starts in Huntington and Smithtown. The International Circulation Managers Association recognizes Newsday's carriers as the best in the United States and Canada. Circulation reached 100,000, making Newsday one of the 10 largest tabloids in the country. Newsday wins Pulitizer Prize for exposing William DeKoning, the leader of Local 138, Operating Engineers. This is the first round in a long battle against DeKoning that ends when he goes to prison.