1961 Curtain slider snaps

[beatrix1]

I am putting new curtains in my 1961 Tradewind. I removed the canvas strip of snaps from the original curtains and am putting them on the new ones as they are in good shape. In the tracks, however, are these little plastic sliders with snap receivers. I am missing about a dozen or so of them and cannot figure out where to buy them. Any ideas?

[Studioman]

Did you find these?
Also:
What are your curtain rods? Just wondering if what came in mine are factory?
Mine are basically just metal curtain rods for a house, riveted backwards onto the walls above the windows.

[PaulnGina]

Could this possibly be used?

Glide-Tape, Wall Mount Kit - $11.99