April 1951 - November 1951
The Board of the Electrotechnische Vereeniging of {period} has been constituted as follows:
| Frits Niemöller | President |
| W.L.E. Kroos | Secretaris |
| G.H. Jobsis | Thesaurier |
| A.A. Loeff | Excursieleider |
| Pieter Fockens | Commissaris |
April 1951 - November 1951
The Board of the Electrotechnische Vereeniging of {period} has been constituted as follows:
| Frits Niemöller | President |
| W.L.E. Kroos | Secretaris |
| G.H. Jobsis | Thesaurier |
| A.A. Loeff | Excursieleider |
| Pieter Fockens | Commissaris |