Trenner’s work as a writer is threefold: fiction and criticism (these have been published in books and magazines); journalism (he has written for The New York Times, The Washington Post, The Princeton Alumni Weekly, and other periodicals); and writing about writing (he has authored/coauthored three books for AT&T: The Bell Labs Writer, The Bell Labs Editor, The Bell Labs Style Guide). At present he is working on a book called Write—a practical guide to writing based on three core ideas: purpose, pattern, and process. As a photographer, Trenner has had one-man shows (for example, at the Present Day Club and Gallery 353 in Princeton, NJ, and Gallery 14 in Hopewell, NJ), been selected for several group shows, and received various awards, including “Best in Show” at Grounds for Sculpture’s annual Focus on Sculpture show. He photographs scholars, writers, and artists for use in publications.