There are interviews with both Tarshis and Samuelson in Colander's and 
Landreth's book on the Coming of the Keynesian Revolution to America. I 
believe both interviews talk about the troubles that Tarshis book had 
and the good fortune that Samuelson had to not suffer the same fate as 
Tarshis with the first edition of his introductory textbook.  You should 
find the quotation that you want there. 
 
Bradley Bateman