A bit of an odd one this time
The photo came with a collection aerial views of RCAF Trenton from the early 1930's
It shows a lineup of ski equipped biplanes (don't recognize the type) in the snow with a larger biplane behind them
In the background is the Alexandra Bridge between Ottawa and Hull. I believe part of the Peace Tower can be seen above the bridge which would indicate the photo was taken in Hull..
There lots of civilians around the aircraft indicating some sort of event.