HARRY W. HORST was born in Pennsylvania around 1873. He married wife Effie at the age of 21, and four children were born to them, Albert, Mabel, Nettie, and Florence. The Horst family resided in Pennsylvania as late as 1907. 

After moving to New Jersey, Harry Horst began his hardwood floor contracting business in Camden in 1910. At the time of the 1920 census the Horst family resided in Laurel Springs NJ. As America's entry into World War I put a crimp into home construction, Harry Horst then was also working as a shop foreman at one of Camden's shipyards. Ten years later, when the next census was taken, the family had moved to a home on the White Horse Pike in Magnolia NJ. A few doors down resided a dentist, Dr. Alexander Picou. His son, Cecil Picou, would later become a member of the Camden Police Department. 

By 1936 Harry W. Horst was living and doing business out of his home at 1240 North 19th Street in the Cramer Hill section of Camden. He later moved to 1021 North 32nd Street, also in Cramer Hill, where he lived as late as 1947. He moved to Philadelphia to stay with his daughter, Mrs. Florence Yanko shortly thereafter. On January 31, 1949, while visiting his son Albert at his home in Collingswood, Harry Horst passed away. He was buried at Locustwood Memorial Park in Delaware Township (present-day Cherry Hill), New Jersey on February 3, 1949.

Camden Courier-Post - February 2, 1949

Services for Harry W. Horst, 75, formerly of Camden and one of the city's first hardwood floor contractors, will held tomorrow at 1:00 PM in Foster's funeral home, Haddon and Lees avenues, Collingswood, where friends may call tonight. Burial will be in Locustwood Memorial park. Mr. Horst died Monday while visiting his his son, Albert C., 950 Merrick Avenue, Collingswood. He began his contracting business in Camden in 1910 and continued it until his retirement a several years age. Also surviving are three daughters, Mrs. Florence Yanko, with whom he had lived in Philadelphia; Mrs. Mabel White, New York; and Mrs. Nettie Cochrane, Camden; four grandchildren and one great granddaughter.  .