Supplier of thin wood/veneer sheets for model making

Hi, I'm looking for a supplier of, ideally small quantities, wood that I can use to make various models. I'm looking for 3/16th, 1/8th and 3/8th of an inch. Not particularly bothered about the type of wood as long as it's more substantial than balsa. I have a Triton table say but doubt my ability to get even strips that thin.



Cheers, Simon