Does anyone know where I can find the very small (1/8"?) pinch clamp that goes on the cowl vacuum canister hose for a 68 AC car.

None of the local part suppliers have them that small.

I could have sworn I saw them at Lowes. No kidding.

Look in the plumbing department, where they have fittings and clamps for plastic tubing used in the house.

Good luck!!!

http://www.inlinetube.com will have them if lowes don't.

I can't see in the 68 AIM where the clip is shown (C60-E2?), but the 69 AIM shows it clearly as 3891759 (C60-E5).
www.amkproducts.com have it listed as B-10247. $3 buys 4.

Thanks for the suggestions. I'll look at Lowes first.