My library of university economic-impact studies is reasonably popular, so I am beginning a parallel collection of impact studies on tbed programs and organizations. I am generally more sympathetic to this kind of evaluation, since at least the counterfactual condition — no program at all — is credible. However, there are still measurement questions. If you are a copyright owner and have a problem with your study being posted here, just let me know and I will replace it with a link to your site.

TBED impact studies

Program/Organization
Ben Franklin Technology Partners (2009)
Connecticut Innovations FY05-08 2010
Maryland TEDCO Impact (2015)
Ohio Third Frontier (2009)
Science Center, Philadelphia (2009)