On the C-SPAN Networks:
David Callahan is a Founder and Editor for the Inside Philanthropy with five videos in the C-SPAN Video Library; the first appearance was a 2004 Speech as a Co-Founder for the Demos. The year with the most videos was 2010 with two videos. The year with the highest average number of views per program was 2011 with an average of 2,110 views per program.
Videos: 1 c. January 1, 1999 - Present Co-Founder, Demos