Mr. Donnelly's expert testimony has been admitted in the Supreme Court of New York State in Nassau, Suffolk and Queens counties. And in Deleware and Florida outside New York State.
He has lectured before the American Instute of Appraisers, Long Island Chapter on business valuation. He addressed the Nassau Chapter of the New York State Society of Certified Public Accountants on the subject of enhanced earning capacity from education acquired during a marriage.
When computer systems were becoming prevalent in the small to medium sized business world, he presented a seminar to over a dozen state CPA societies, on the topic of auditing computerized accounting records.
He is a member of the AICPA and NYSSCPA.