David began practicing law in Missouri in 1974. In 1982, he relocated to Paonia, Colorado where he was the owner and publisher of The North Fork Times. He also started practicing law in Delta County, Colorado at that time. David later moved to Denver and, after establishing the tax department of a mid-size law firm, opened his own practice, Klancke & Cook, Attorneys at Law. His firm emphasizes wills, trusts, tax planning, probate, business formation and advice, and real estate.
David is active with a number of local non-profit and charitable organizations and serves on the national board of directors for Bethesda Lutheran Communities, which operates homes and provides assistance for the developmentally disabled. Besides instructing at Arapahoe Community College in its adult education program, he speaks throughout the state on estate planning/family relationship issues and has a current presentation of Mom Always Loved You Best. David is close to finishing his first book titled Games Lawyers Play and has two other publications in the works.
David holds a B.A., J.D., and L.L.M Tax from Washington University. See his business website here.