Michael Nuwer wrote:
>Samuel Bostaph estimates that about ten thousand 
>students at his university have used Paul 
>Heyne's Economic Way of Thinking in the period 
>between the late 1970s and the present. As a 
>matter of reference, E.K. Hunt and Howard 
>Sherman's text, Economics: An Introduction to 
>Traditional and Radical Views, sold 30,000 
>copies in its first year (1972) and 10-15,000 
>copies a year into the mid-1980s. Between 1970 
>and 1984 McConnell's text was averaging more 
>than 100,000 copies a year (as high as 200,000 
>in the year a new edition was released) and 
>Samuelson's text was not too far behind. 
>(Kenneth G. Elzinga, "The Eleven Principles of 
>Economics," Southern Economic Journal, Vol. 58, 
>No. 4 (Apr., 1992), pp. 861-879. See Table III for sales data.)
>
>Michael Nuwer
>

While we're mentioning Hunt, let me highly 
recommend his "History of Economic Thought."

John Médaille