Leo Trachtenberg, 1918-2013, and was raised and educated in the Bronx, New York, not far from Yankee Stadium. As a passionate devotee of baseball—to him the most captivating of all sports—he spent many happy hours at the Stadium seeing the Yankees and other great teams play. “It never seems to matter,” he said. “The great teams, the near-great, the woebegone, there’s nothing like baseball and the ambiance of a ball park—preferably one with real grass—to lift the spirits.” Most of Mr. Trachtenberg’s adult career was spent as a director/producer/writer of documentary films for social service agencies, government, and industry. As specialists in high-speed, slow-motion photography, he and his associates did important film work that led to the adoption of the air bag. His films are in use all over the world; many are award winners. After 35 years of production, he retired from filmmaking and devoted himself to writing. In 1983 he wrote his initial baseball article for Yankees Magazine, the first of over one hundred baseball features he had published. Most of his contributions were about Yankee history, but he also wrote articles about his many interviews with current and retired ballplayers, as well as off-beat, human interest pieces. In addition, Mr. Trachtenberg wrote special essays for the Yankee Yearbooks; other baseball history essays have appeared in Baseball History Magazine, and the National Pastime. In 1995, his book “The Wonder Team” was published by Bowling Green State University Popular Press. It was the culmination of a long-held ambition to chronicle the remarkable season and accomplishments of the great 1927 Yankees.