4 1 10 October - November - December Duinkerken, Anton van Additional Author Coolen, Antoon Additional Author Scheerman, Henricus Joannes Additional Author Huyben, J. Primary Author mixed material Bussum Paul Brand N.V. 1949 22.627..jpg Januari - Februari - Maart Duinkerken, Anton van Additional Author Coolen, Antoon Additional Author Scheerman, Henricus Joannes Additional Author Huyben, J. Additional Author mixed material Bussum Paul Brand N.V. 1948 22.627..jpg April - Mei - Juni Duinkerken, Anton van Additional Author Coolen, Antoon Additional Author Scheerman, Henricus Joannes Additional Author Huyben, J. Additional Author mixed material Bussum Paul Brand N.V. 1948 22.627..jpg Juli - Augustus - September Duinkerken, Anton van Additional Author Coolen, Antoon Additional Author Scheerman, Henricus Joannes Additional Author Huyben, J. Primary Author mixed material Bussum Paul Brand N.V. 1949 22.627..jpg