Now, the next point I have some sense is going to really help people. It is Chants of the Church by Solesmes/Gregorian Institute of America, 1954. We preserved the color in scanning this, which makes the file bigger than it ought to be. But it is very helpful in this way for liturgical programs and guides.
You will see that this contains a large Kyriale plus many chant hymns, in modern notes (don't use this as an excuse not to learn square notes!), with English translations in red (literal translations). This will not go into print because of the cost of color printing but it is a very helpful online tool. Thank you to Richard Lee for donating his copy.
Here is a sample (and if you like this, thank the CMAA):