Where can I download 10.14? I can get 10.14.3 or 10.14.5, but they don't install without 10.14.

Click on the link for Mojave in the Related Article above, using a web browser other than Firefox. It'll open in the Mac App Store.

(208032)

The last FULL INSTALLER of Mojave is version 10.14.6 and can be downloaded as per link provided by previous person posting.

The reference of Mojave 10.14.3, 10.14.5 are probably download of Only upDates to Mojave from here.

The above are Not Full Versions of Mojave