When Harry Miller was born on June 2, 1889, in Philadelphia, Pennsylvania, his father, Benjamin, was 28 and his mother, Rosa, was 26. He married Ethel Harris in 1912 in his hometown. They had one child during their marriage. He died on November 14, 1962, in Chattanooga, Tennessee, at the age of 73.

From Ethel Miller Katz: My youngest brother, Harry, bless his soul, was so good to me. He opened a very swank dress shop on Market St. in Chattanooga. Later he sold it for one million dollars and offered his services to the army during the Second World War. He became a dollar-a-year man at the Pentagon with the rank of colonel. He passed away at 75 years of age but he left me a legacy in my precious niece, Eleanor Sylvia Miller Schwartz, who is so dear to me.