| Regimental number | 4290 |
| Place of birth | North Melbourne, Victoria |
| School | Collingwood State School, Victoria |
| Religion | Church of England |
| Occupation | Printer |
| Address | 91 Langridge Street, Collingwood, Vic, |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Mother, Mrs F Spark, 81 Langridge Street, Collingwood, Victoria |
| Previous military service | Harry Spark served in the 63rd Senior Cadets and afterwards as a Sargent in the 63rd Infantry Regiment |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 7th Battalion, 13th Reinforcement |
| AWM Embarkation Roll number | 23/24/4 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A64 Demosthenes on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 7th Battalion |
| Fate | Died of wounds |
| Place of death or wounding | Guedecourt, near Bapaume, France |
| Age at death | 21 |
| Age at death from cemetery records | 21 |
| Place of burial | Guards' Cemetery (Special Memorial No. 54), Lesboeufs, France |
| Panel number, Roll of Honour, Australian War Memorial | 51 |
| Miscellaneous information from cemetery records | Parents: Charles and Frances SPARK, 147 Langridge Street, Collingwood, Victoria. Native of Melbourne |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |