where are my old weblogs?

I used to have more than one weblog and would set up new ones with instructions for online classrooms. I need to find an old one that I haven't used for over a year, but I'm not sure where to look or whether they've even been saved or archived? I've recently had a request for one of my older classes (over 12 months old) to be reinstated and I don't want to have to start all over again. Can anyone help?