Eugene List, 66, a pianist who gained fame when he was summoned to play for Winston Churchill, Harry Truman and Josef Stalin at the Potsdam Conference, was found dead March 1 at his home in New York City. The cause of death was not reported.

He had been scheduled to perform a concert in Carnegie Hall at the end of April and had an active season of concerts planned throughout the country.

At the 1945 Potsdam performance, Stalin gave then Staff Sgt. List a standing toast. Before the conference was over, Mr. List was asked to play four more times. He played the Tchaikovsky B-Flat Minor Concerto, as well as an assortment of works by American and Russian composers. President Truman sat next to Mr. List during several of these recitals.

Pictures of the commander-in-chief turning the music score pages for the noncommissioned officer appeared in newspapers and magazines around the world, and Mr. List became famous as "the Postsdam pianist." Later, President Truman frequently invited him to play at the White House.

Mr. List, born in Philadelphia, grew up on the West Coast, where his father was a teacher. He made his musical debut at age 12 with the Los Angeles Philharmonic, playing Beethoven's Third Piano Concerto.

At 13, his parents sent him to Philadelphia to compete for a scholarship to study with Olga Samaroff Stokowski. She took him as a pupil and entered him in a competition sponsored by the Philadelphia Orchestra. He won, and the prize was an appearance with the orchestra in the premiere of Dmitri Shostakovich's Piano Concerto.

He also acted in one movie, "Bachelor's Daughter," in 1946.

Mr. List's musical interests ranged far and wide, but he became identified especially with the work of Louis M. Gottschalk. During the 1950s, he performed the first album that 19th century composer recorded.

Mr. List also was known for "monster concerts," scheduling pieces that required a number of pianos on stage. In 1970, Mr. List and nine of his students from the Eastman School of Music appeared on the Ed Sullivan Show performing a Gottschalk piece on 10 pianos. Recently, he had been a member of the faculty of Carnegie-Mellon University.

His wife, violinist Carroll Glenn, died last year. His survivors include two daughters and his father.