Looking for old versions of apps

Our asset management system is quite old, so we've had to keep our OS and Adobe versions held back.  Unfortunately one of the machines died and we've had to build it from scratch.  However we've been unable to obtain the adobe software running on it.  We've tried imaging another machine or dragging the applications over but have not been succesful getting the machine to work.

I tried building a package from the admin console but the versions don't go back far enough to find one compatible.

How do we obtain older versions?

Thanks