Hi Milt,
If I'm not wrong, any .jpeg file (as the one shown) can be printed on a T-shirt or vinyl using the "sublimation" transfer technique (which I think is one of the most popular and inexpensive techniques used nowdays) Buy I'm not an expert in this area, so...
In any case, let me know if you need any other file extension and I'll send it to you. (maybe without the background?)