John Cosgrove's mug shot. Cosgrove was one of the Trekkers arrested after the Regina Riot. Exhibit #104 of the Regina Riot Inquiry Commission.

Rioters and police during the Regina Riot. Machinery at the bottom of the frame is the city's tar-making machine, parts of which were thrown at police during the riot. Blurred figures to the far right of the frame are a police officer and a striker fighting.