Found Some Old Scotch

My great grandmother passed away last year, and we are just now finishing going through some of the things she left behind. There was so much stuff. My brother and I found some old liquor, it all seems to be scotch! It was laying down horizontal in an old cabinet, so I assume the seal is still good on all of it. I have no idea how old it is though. I am going to post some pictures and if anyone has any clue about the brand or scotch that we have we would love to know anything you know. Do you guys think this stuff is valuable?

Thanks,
Sam

http://flickr.com/photos/35636915@N02/