Source for security pins (?) for double-hung windows?
In the 1920s bungalow I just bought, the window sashes all have holes drilled for those pins you stick in to hold the sash open a safe amount. I've seen them called "night pins", I think. Anyway, I have the pins for some of the windows, but not all, and they're the kind that you need a special tool to extract. In a previous house of the same period I'd used to live in, there were pins like that but they were anchored to the frame by little chains, so if they weren't in use, they could just hang out and not get lost, and they were easy to remove in an emergency without a special tool. Does anyone know what I'm talking about, and do you know of a good online source for them?