Missing Hymn!

I just realized the hymn "Be Thou My Vision" is not in the newest LCMS hymnal. Nor does it seem to be in the previous hymnal.

How do I know this song so well?

Why is it not in them?

Here is the text:

Be Thou my vision, O Lord of my heart,
Be all else but naught to me, save that Thou art;
Be Thou my best thought in the day and the night,
Both waking and sleeping, Thy presence my light.

Be Thou my wisdom, be Thou my true Word,
Be Thou ever with me, and I with Thee Lord;
Be Thou my great Father, and I Thy true son;
Be Thou in me dwelling, and I with Thee one.

Be Thou my breastplate, my sword for the fight;
Be Thou my whole armor, be Thou my true might;
Be Thou my soul's shelter, be Thou my strong tower:
O raise Thou me heavenward, great Power of my power.

Riches I heed not, nor man's empty praise:
Be Thou mine inheritance now and always;
Be Thou and Thou only the first in my heart;
O Sovereign of Heaven, my treasure Thou art.

High King of Heaven, Thou Heaven's bright sun,
O grant me its joys after victory is won;
Great Heart of my own heart, whatever befall,
Still be Thou my vision, O Ruler of all.