| August 4, 1932 | Birth of Harry W./Wayne Schmoll; a matching genealogical record reports Colorado as birthplace. | High for date; Moderate for birthplace |
| Late 1950s | Likely active in Southern California parachuting before the first surviving 1960 listing. | Probable, not precisely documented |
| June 1960 | Parachutist lists Los Angeles Sky Divers — Harry Schmoll — 6947 Sedan Avenue, Canoga Park, CA. | High |
| Early 1965 | Contemporary account identifies Harry Schmoll of Para-Systems as maker of Rod Pack’s specialized parachute-less-jump harness. | High |
| 1965 | Rod Pack successfully performs the stunt over Arvin using Schmoll’s harness. | High |
| 1965 | IMDb credits Schmoll as uncredited skydiving stunt double for Dee Dee in Beach Blanket Bingo. | Moderate |
| 1960s, date unknown | Reported participation in Stanley Aviation YANKEE human-extraction testing, possibly as first live human subject. | Reported; unverified |
| Later career | Reported engineering, consulting, or development work associated with Universal Propulsion. | Reported; unverified personally |
| 1988 | SAFE Association awards Harry W. Schmoll its Meritorious Service Award. | High |
| Late 1990s | Reportedly continued escape/survival-system work near the end of his life. | Reported; unverified |
| February 27, 1999 | Death at age 66; records associate him with Fort Smith, Arkansas. | High for date; Moderate for exact place |