Re. the Packard: my one-time Fords, both Fiesta XR2 and Escort XR3i had twin spots too! Or maybe one was a fog? Can't remember and seldom used them. What I do remember, is that my Fiat X1/9 also had two additional lights, but they came with covers and these were always in place when I though I might want to use them... very useful indeed.
But apart from that, smashing pix!
Rob C
Edit: I suspect that the Ford spots were both spots and acted as 'main beam' when you needed most light... confusing.