dear nesbitb
it depends on whether you want to design your own, customize pre-designs, or do designs that already exist. some websites do only one out of the three. my mother and i are getting ready to do some jar-labeling for the 4th of july and i found this site on a google-search:
http://www.labelsonthefly.com/it looks like they do all 3 and even if u dont wanna do your own designs they have some pretty cool ones on there for different events and stuff. i found 4th of july ones which was good
if it turns out u dont wanna do pre-done labels you could always paint them on with glass paint but that may be tedious after a while - especially if u have a load of jars to do
hope that helps!
