Material used in P-37 Gear?

Well I will admit I collect a lot of Field Gear, P37 from the Wars, to the new MOLLE products.

One thing the older gear doesn't have in the ability to modify it as much as the newer stuff is meant to be. And I have a sewing machine. And a few pouch ideas that can be made! :madsmile:

So I was wondering if anyone knew where to get the same (or comparable in weight and color if possible) Cotton Canvas they used for the pouches etc like the Commonwealth P37 Field Gear ?? :confused:

Dimitri