The last few days I've thinking about my postcards. For the time being, I am filing them in geographical order. But since I was given a huge amount of old family postcards (read more about it here) I've been thinking that it may be better if I separate the written from the unwritten. The unwritten could be organized geographically and the written ones by date. So, the written ones could be something like a family calendar (the oldest one is from1909!!!).
What do you think? What filing system do you use for your postcards?