Folio History of Ancient Greece

I was wondering if anyone had information/feedback on the content of the books in this set. Are they all written by a single author? I have found this set was published in 2002, but can’t find any information on it in a prospectus. Wondering if the information and writing are good quality.

>1 RRCBS:

Vol 1 The Lyric Age 750-510 BC by A.R. Burn
Vol 2 The Persian Wars 546-478 BC by A.R. Burn
Vol 3 The Classical Age 479-323 BC by Simon Hornblower
Vol 4 The Hellenistic Age 336-146 BC by F.W Walbank