Sidney Kess, a renowned tax lawyer with a career spanning more than 70 years that included several decades in which he wrote a regular column for the Law Journal, died on Sept. 18. He was 97.

A prolific author and lecturer who still made the conference circuit late in his life, Kess taught hundreds of thousands of attorneys and accountants through his long career—not just about estate and financial planning and all issues related to taxes, but also how they can improve life for themselves and for others outside of court filings and spreadsheets, colleagues and mentees said.