Prior to this, Callahan served a variety of positions at Boylan, including the first athletic director, first head coach in football, basketball, and chair of the mathematics department.

Immediately prior to his presidential appointment, Callahan served as director of the Illinois Department of Financial Institutions under Governor James R. Thompson.

[6] Callahan & Associates also seeks to promote the industry by facilitating cooperative endeavors among the nation's credit unions.

Due in large part to Callahan's leadership, Patelco grew from a regional credit union with $280 million in assets to a national one with more than $3.0 billion when he retired in 2002.

[11] Proceeds from the investments of the fund support grant requests in the areas of cooperative development and financial literacy.