HARRY ALBERT HAINES JR. was born on May 8, 1892 in New Jersey. He was the son of Harry Albert Haines Sr. and his wife, the former Mary Hickman. The family lived at 276 Sycamore Street until the compilation of the 1898 City Directory, when they moved to 294 Sycamore Street, near the corner of South 3rd Street and Sycamore  in South Camden.. When the Census was taken in 1900 the Haines family, which included older siblings William and Ethel, lived at 294 Sycamore Street.  Also living at the Sycamore Street address was Mrs. Haines' brother, William Hickman. Camden policeman Charles H. Fitzsimmons lived a few doors away at 1135 South 3rd Street in 1900, City Assessor Lewis Stehr Sr. was at 1131 in 1910. Lewis Stehr Jr. served as Camden's Chief of Police from 1928 until his death in 1930.  

Harry Haines Sr., worked as a glassblower, as his father did before him, from the time of the 1880 Census through the 1900 Census enumeration. He served with the Camden Fire Department as a ladderman with Ladder Company 1 in 1897, 1898 and 1899. The 1900 Census indicates that he returned to glassblowing, but by 1904 he had been retuned to the Camden Fire Department, where he served until the 1930s. 

Harry A. Haines Jr. was single and was still living at 294 Sycamore Street in South Camden when he registered for the draft on June 5, 1917. He was then working as a stock clerk for the Victor Talking Machine Company. Not long afterward he and his parents moved to 1175 Kenwood Avenue in Parkside, the home of his sister Ethel and he husband Charles King who had married in 1909. Sadly, his mother, Mary Haines died of diabetes in March of 1918.

He was still working for the Victor company in January of 1920. The Census taken that month shows that his mother had passed away. Harry Sr. and Harry Jr. were then still living with daughter Ethel and her husband, Charles King, at 1175 Kenwood Avenue. This arrangement held through at least 1924, according to that year's City Directory. Harry Haines Sr., still with the Camden Fire Department, was by this time Captain of Engine Company 2.  

Harry A. Haines Jr. married around 1926. He also changed careers that year. He was appointed to the Camden Fire Department on July 1, 1926 and reported for duty the same day. He was assigned to Ladder Company 1 and served with that unit until December 24, 1926 when he was temporarily re-assigned to Engine Company 2, both units located at the old Fire Headquarters on North 5th and Arch Streets. On March 16, of 1927 Harry Haines Jr. returned to duty with Ladder Company 1. 

The 1927 Camden City Directory shows Harry Haines Jr., city fireman, living at 1455 Kaighn Avenue. The 1929 Directory shows Harry Haines and his wife Frances at 914 Pearl Street,  where they remained through at least October of 1959. The 1927 Directory also states that his father had also remarried, moved to 1244 Mechanic Street with his wife Anna. Harry Albert Haines Sr. was Captain at Engine Company 7 on Kaighn Avenue by 1929. Harry Albert Haines Sr. remained active with the Fire Department for several years thereafter, before retiring in the 1930s. He was living in Woodlynne, New Jersey when he died on July 4, 1941 at the age of 75.

On April 3rd, 1942 units of the Camden Fire Department's First Battalion were responding to an alarm at Point and Erie Streets, North Camden. A group of children were on their way to a birthday party for nine-year-old, Betty Mogck. The group of excited birthday celebrants, hearing the fire engines coming, ran into the street to see where they were going. As Engine Company 2 was making the turn at Erie Street, the Chauffeur, Fireman Harry Kleinfelder pulled hard on the wheel to avoid running over the children but not before striking little Betty Mogck. The apparatus swerved to the side of the street, sheared off a utility pole and came to rest on the pavement. Two members were hurled to the ground, slightly injured. Betty's older brother, John, was down the block talking with friends and came running up the street. Betty Mogck was rushed to Cooper Hospital suffering from a broken leg. Firemen William Hopkins and Harry Haines, who was riding on that call with Engine Company 2, were treated for bruises and released. Years later, Betty's brother, John J. Mogck, Jr. would himself enter the Department and rise from the ranks of Probationary Fireman to retire as Chief of Department.  

Harry A. Haines Jr. remained with Ladder Company 1 until June of 1951, when he was transferred to Engine Company 11 on North 27th Street in Cramer Hill. He was sent to Ladder Company 3 at North 27th Street and Federal Street in East Camden on January 16, 1955. On May 1st of that year he was detailed to the Commissioner's Office. Harry A. Haines Jr. retired out on pension on August 1, 1955. He left Pearl Street at some point in the 1960s, possibly after the riots of 1967.

Harry Albert Haines was a resident of Pitman, New Jersey when he died in July, 1975.