BMC Arabia

George Hill's BMC Arabia, the Arabian Greek coins in the British Museum collection, has been scanned and is available for download from the Internet Archive (formerly the Million Book Project).

(via Digital Library NUMIS)

I'm surprised they put this up; George Hill died 60 years ago and thus his works are not public domain in the UK, and since the book was never published in the USA the law binds servers here to UK rules.