| KNVB beker 1960/1961 - Appearances as Referee |  |
 |
 |
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| 18/09/1960 | Dordrechtsche FC | - | RBC Roosendaal | 2:3 | - | - | - |
| 30/10/1960 | HVV Tubantia | - | VV Oldenzaal | 0:5 | - | - | - |
| KNVB beker 1960/1961 - Appearances as Referee | |
|
|
||||
| 18/09/1960 | Dordrechtsche FC | - | RBC Roosendaal | 2:3 | - | - | - |
| 30/10/1960 | HVV Tubantia | - | VV Oldenzaal | 0:5 | - | - | - |
| Complete name: | Wilhelmus Jacobus Maria Schalks |
| Born: | 21/03/1923 † 25/10/2017 |
| Place of birth: |
Leiden, 
Netherlands |
| Residence: | Leiden |
| Nationality: |
Netherlands |