I see a lot of hits for the Open Transport Tycoon Deluxe post which I made quite a long time ago and where I have mentioned the download of the full pack of OpenTTD with original data files. This download is not available from that server anymore (for some time already as well), but since I (still) have data files, here is an archive of a full data folder from OpenTTD, just get what is missing from there for your setup.