LSP (1938) Beginselprogram. [Beginselprogramma]
LSP (1937) Beginselverklaring. [Beginselprogramma]
LSP (1933) Beginselverklaring en Algemeen Program. [Beginselprogramma]
LSP (1929) Beginselprogram. [Beginselprogramma]
LSP (1921) Beginselverklaring. [Beginselprogramma]