Stoics, rummage, rummage ahh here we are..first lets look at the names..
The Stoics first proponents including the founding father Zeno of Elea (490-430 BCE-?) are :-
The above could be affixed with the tentative label of the Originals. I suspect that a lot of these names are sadly, just that, names from Diogenes Laertius' Lives of the Eminent Philosophers, which you will be delighted to know, is available to read as a wikisource here .
Then we have:
Diogenes Laertius (see above)
Pyrrhonist Critiques (various)
Some of these in the secondary group..perhaps to be labelled as The Later Guys, we do have some writings, most notably in the case of Cicero, The Tusculan Disputations, On the Nature of the Gods etc available here . and Seneca. We could add to this list Marcus Aurelius as influenced by Stoic thought and Plutarch who seemed to be an out and out anti-Stoicist.
More soon about some of the core tenets and comparisons with Epicurean thought.