I'm not sure you will find them for the Delta. I have the old Pockwell that got bought by Delta....same saw. Smallest I have found is 1/8" at Home Depot. Everyone has 3/32". You could buy the blade material and make your own. Only takes a torch. If you find some, let us know as I could use some too. I don't know how well it will work as the blade guides are kinda coarse and may not control that small a blade. You must be doing small bandsaw boxes or something very fine. I find 1/8" works fine for all my stuff. Good luck.
If anyone has it, it will be Starrett. I know they have it in 100' coils but not sure they have ready made. You could try Circle Saw Works in Houston and they might weld some up for you.