I would recommend two books--one old, one fairly new. 
 
The first is W.H.Hutt's ECONOMISTS AND THE PUBLIC (Jonathan Cape, 1936), 
especially chapter XIV "Sanctions for the Economists' Authority." 
 
The second is Michael A. Bernstein's A PERILOUS PROGRESS:ECONOMISTS AND 
PUBLIC PURPOSE IN TWENTIETH-CENTURY AMERICA (Princeton University Press, 
2001).  A quick summary of the main arguments is found in my review of this 
book in THE QUARTERLY JOURNAL OF AUSTRIAN ECONOMICS 6:1 (Spring 2003), 
75-79.  This review should be available online at www.mises.org in the 
journals section. 
 
Sam Bostaph