TabShare.live features a growing list of tracks (that we pick) with full lyrics and chords, starting with the 70’s hit How Long.
Here is a 70’s Goldmine YouTube playlist:
You’ll find the chords and lyrics to all those songs here:
Check the Help page for an overview.
In addition to the chords/lyrics, I also embedded Spotify track data, YouTube video, karaoke/instrumental version and Wikipedia data.