G.P.O. Men and Boys either arriving or getting ready to go home from their Annual Wayzgoose Gathering which I believe was held in Mount Barker.
It really is a wonderful picture, clearly the apprentices are in one wagon and the men are in the other wagons.
There are a couple of spoilsports in the crowd who decided not to wear hats. Cheeky buggers!
Photo Courtesy of Warren Pietsch.