I'm looking for a set of microdrill bits, from #80 to #60, for another project. I've got several sources for size #1 through #60, but I haven't found any for the smaller bits.
I know you found them already, but for others McMaster Carr at mcmaster.com is a good place to get 61-80 drill sets.
BTW, Small Parts does have some unique stuff, but they are a bit of a pain to deal with. It is not easy to get quick turn around from them, and they are nowhere near as easy to order from as McMaster.