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