Jack Albertson was a character actor whose career started in vaudeville in the 1920s. He was an all-around entertainer - comedian, dancer, singer, musician.
Mr. Albertson appeared in several movies from the 1940s into the 1980s, and many tv shows from the 1950s into the late 1970s. While he played many memorable movie characters, he may be best remembered as the grandfather in 1971's "Willy Wonka and The Chocolate Factory". As for his tv roles, he'll be best remembered as 'Ed Brown' in the mid-1970s tv sitcom "Chico and The Man" (his character was 'The Man'), which also starred Freddie Prinze.
I wrote to Mr. Albertson in 1980, sending this photo to his residence in Los Angeles. He returned it within two weeks.