COSHG holds an eclectic collection of social justice campaign and event posters dating from the 1980s and 1990s.

Damaged posters are being restored by students at Melbourne University’s Grimwade Centre for Cultural Materials Conservation, with funding from Public Record Office Victoria.

Work has commenced again after the project was put on the hold due to COVID-19. Once the restoration is complete, COSHG plans to exhibit the collection in 2023.