Direct solution to the original problem
You can find all old point releases of 14.04 LTS and 16.04 LTS via these links.
http://old-releases.ubuntu.com/releases/trusty/
http://old-releases.ubuntu.com/releases/xenial/
For Ubuntu Server 14.04.1 via torrent,
http://old-releases.ubuntu.com/releases/trusty/ubuntu-14.04.1-server-amd64.iso.torrent
http://old-releases.ubuntu.com/releases/trusty/ubuntu-14.04.1-server-i386.iso.torrent
and the iso files directly (if it does not work with torrents),
http://old-releases.ubuntu.com/releases/trusty/ubuntu-14.04.1-server-amd64.iso
http://old-releases.ubuntu.com/releases/trusty/ubuntu-14.04.1-server-i386.iso
You find the corresponding md5sums at
http://old-releases.ubuntu.com/releases/trusty/MD5SUMS
Comment to upgrading from the second point release (14.04.2 LTS)
Only the first and fifth point release have LTS. See this link (and scroll down),
http://www.ubuntu.com/info/release-end-of-life
You can keep upgrading from the second point release by upgrading the LTS enablement stack, but it is risky (known to cause problems with hardware drivers, "If it ain't broke, don't fix it"). Therefore I would say that it is best to stay with the first point release until the fifth point release is available (14.04.1 LTS and 16.04.1 LTS ...) particularly for servers.