Dating an album


In my OCD, I've bought a lot of old records.As a newbie, I don't know much about them but when I looked, there was no date on them. Is there a way to tell the age by the stamp on it? Any other way?
lmr
OK the label information is usually found at the record company site or there are internet resources that would supply the info about record label release years. Also discogs.com can often have a release year information of a particular album if found and if there.
While browsing my wardrobe, I also came across such CDs. Was there anyone willing to share links to old music fanatics?

I think it's important to read the right blogs for a broader outlook. For example bagnolodipo.com there are many articles on this topic. This blog helped me to understand many issues.

Post removed 

Go to Discogs - they''ll have everything you need, and you can even catalog your collection for free in their database, which I've been doing the past week or so.