September 1918 - December 1919
The Board of the Electrotechnische Vereeniging of {period} has been constituted as follows:
H.J. Boon | President |
W.Z.L. van der Vegte | Secretaris |
E.C. Demmink | Thesaurier |
D.C. Schumm | Vice-President / Afgev. C.C. |
J.C. Romeijn | Bibliothecaris |