This article  -  'Marx and Keynes' was published in

Western Socialist
Boston, USA, November-December 1955

Not only did this short article provide the title for Matticks lader book on 'Marx and Keynes - The Limits of Mixed Economy' from 1969. The first section of this article reappears word for word in the opening paragraphs of the book. 

The e-version of this text was provided by Adam Buick and copied from the Marxist.org-website.