In addition to his expert witness services, Jon Bari has performed detailed investigative research (including timeline development, connections and interconnections of people and money, and narrative reconstruction) via public records searches (i.e., through Freedom of Information Act - FOIA - and Right to Know Law requests), press accounts and analyst reports of various organizations and companies including:
- Delaware River Port Authority, regarding the distribution of $700+ million in "economic development" funding, including the forensic audit thereof
- Family Court of Philadelphia, Court of Common Pleas, First Judicial District of Philadelphia
- Human Right to Adequate Food: Nutrition, Health, and Well-being
- Independence Visitor Center Corporation
- National Institutes of Health: Digestive Diseases and Auto-immune Diseases (including Celiac Disease), health equity, disease prevalence, treatment burden, treatment options, and implicit bias
- National Park Service
- Ride the Ducks, amphibious sightseeing tour boats, operations and accidents, National Transportation Safety Board findings
- U.S. Forest Service