Subjects: “…[Duys, J.E.W., Portrait.]…”

Subjects: “…., Polak, Henri., Duijs, J.E.W., SDAP., Group portrait.]…”

Subjects: “…., Laan, Kornelis ter., Duys, J.E.W., Gerhard, A.H., SDAP., Group portrait.]…”

Subjects: “…., Helsdingen, Willem Pieter Gerardus., Duys, J.E.W., SDAP., Afdeling Leiden., SDAP., Group portrait.]…”

Subjects: “…., Helsdingen, Willem Pieter Gerardus., Duys, J.E.W., Kol, Henri Hubert van., Gerhard, A.H., Hugenholtz, F.W.N., Tempel, Jan van den., SDAP., Group portrait.]…”

Subjects: “…., Helsdingen, Willem Pieter Gerardus., Duys, J.E.W., Polak, Eduard., Roode, J.J. de., SDAP., Group portrait.]…”

Subjects: “…., Polak, Eduard., Duijs, J.E.W., Ankersmit, J.F., Laan, J. ter., Laan, Kornelis ter., Helsdingen, Willem Pieter Gerardus., Drees, Willem,, SDAP., Partijraad., Group portrait.]…”

Subjects: “…., Wibaut, Florentinus Marinus., Duijs, J.E.W., Mendels, M., Albarda, Johan Willem., Ankersmit, J.F., Groeneweg, Suze., Kleerekoper, Asser B., Troelstra, Pieter Jelles., Kuykhof, J.G. van., Vliegen, Willem Hubert., Schaper, J.H., Hermans, L.M., Goes, Frank van der., Bergmeijer, J.A., SDAP., Group portrait.]…”

Subjects: “…., Polak, Eduard., Duys, J.E.W., Kol, Henri Hubert van., Oudegeest, Jan., Zadelhoff, Jan van., Jonge, W.C. de., Gerhard, A.H., Tempel, Jan van den., Albarda, Johan Willem., Zeeuw, A.B. de., Mendels, M., Helsdingen, Willem Pieter Gerardus., Ossendorp, F.L., Hugenholtz, F.W.N., Heykoop, A.W., Hermans, L.M., Laan, J. ter., SDAP., Group portrait.]…”

Subjects: “…., Kieft, J. van de., Duys, J.E.W., Bergh, G. van den., Troelstra, Jelle., Drop, W., Polak, Henri., Vliegen, Willem Hubert., Nobel, Otto de., La Bella, S. de., Lende, C. van der., Heykoop, A.W., Jong, Alida de., Pothuis, S.J., Zeeuw, A.B. de., NVV., SDAP., Group portrait.]…”