Just for what it's worth I've reached a sort of milestone today of getting at least one citation in the outline for each of the major bullet points. In most cases I have several, but there's definitely a lot more to add.
After stops and starts through the years this version of the outline has built on past efforts and on contributions of citations from lots of people, and I'll work to continue to expand it and make it available in different formats.
Thanks for the contributions so far as I think this will be very useful over time.
Epicurean Philosophy Navigation Map
On my list of things to do is to figure out how to add what I think is a "meta" tag that will provide a link to a "snapshot" picture of the outline, so that when the above link is shared those browsers that know how to it will provide a snapshot (maybe it's called a card view or something like that) rather than a raw URL.
Seems to work now on Twitter and Facebook but not here yet --