From an e-mail I received today from The New York Times:

As a home delivery subscriber you receive free access to Times Machine, our online archive of The Times from 1851 to 1922 – reproduced exactly as it originally appeared.

With Times Machine, see history come back to life:
        
        Just choose a date and see every headline, article and photo
        
        Flip electronically through page after page of history as it was happening
        
        Read about the Civil War or the sinking of the Titanic, or look through the first 70 years of advertising in The Times

Times Machine is only available for home delivery subscribers. . . .