Just want to add one thing to Nancy's excellent information. If all you have is the link, that is probably not going to be sufficient to get the files as Sage does not leave up most old releases. Nancy and I, both have libraries of old versions and can help you for a small fee. 

Just want to add one thing to Nancy's excellent information. If all you have is the link, that is probably not going to be sufficient to get the files as Sage does not leave up most old releases. Nancy and I, both have libraries of old versions and can help you for a small fee. 

Thanks Caren for jumping in here and so appreciate your input and advice!