Notes of the Chord - Playing with other Series

Now that you've looked at the C Harmonica pitch set, there's one more piece of information you need to play great accompaniment lines... the knowledge of the three blues chords you play over. Below are the notes for each of the chords.

I7 = G B D F
IV7 = C E G B-flat
V7 = D F# A C

Commit this to memory. We're referencing the C Harmonica played in the Key of G by the way (Second Position).