Hi there, sorry it has taken me so long to write a reply, but I'm on the bus now and have the time. Yes, it has been possible for me to read almost every literary source available to me for my research on the highest ranking generals of the fourth century CE Roman army. Basically, I started with a book called the 'Prosopography of the Later Roman Empire, Vol. One'. This is kind of like a dictionary of names. Published regularly from the 1960s, it lists almost all secular people in the Roman Empire, and every location the Roman and Greek sources mention them. Then it was just a case of finding a good copy of each sources and reading it and compiling the data. Then I added some Hebrew and other eastern sources that are not contained in this book. There were a few sources I didn't bother finding because I knew they were just small personal letters. This is one of the things I particularly enjoy about my field. I sometimes get jealous of early Empire historians who have a much greater array of evidence to draw upon, but then again I enjoy being able to easily handle all the information. I should also say that I add in numismatic and archaeological evidence where appropriate, although that is a little more difficult to find, as that is not contained in the dictionary of names. Let me know if you have any more questions