Here is the situation:

I go to a church in the south, and we dont sing modern day praise music. All we have are old southern gospel songbooks (not complaining though).

I've looked all over for chords or anything to these songs, and they are scarce.

Is there and easy way to convert the piano notes in the songbooks to a chord progression?

It doesnt even have to be exactly accurate.

Or am I just screwed and have to figure them out by ear?