Fonds consists of textual, graphic and artefact materials created by the Worker's Circle from the early 1900's to 2024. The fonds Contains the operating records of the Worker's Circle, its committees, Montreal branches, choir, the Abraham Reisen school program, and correspondence with the central Worker's Circle office in New York City.

Consists of ephemeral and some documentary material related to both the Yavna B'nai Synagogue (such as correspondence related to the sale of the building) as well as artefacts originating from the Synagogue (parochet/curtains, electric menorah, kesser/sefer torah crowns). Also includes photographs of the synagogue and the Parnass family.

Consists of two series: Series 1 contains organizational documents such as correspondence, receipts, and programmes and Series 2 is sheet music used by the Zimroh Choir of Montreal.