Really? I checked Wiki and it only has an entry on Eternal Mana and it says "Atelier Iris is the first of the series to be released in the US; this release and the English translation are by NIS America", which is why I asked, because I thought I'd heard of more than one.
Wikipedia has it right.
"Atelier Iris" was its own trilogy within a larger series. When it says "Atelier Iris is the first of the series," they're saying the first of the ATELIER series. There were five games before Atelier Iris. They were:
1. Atelier Marie
2. Atelier Elie
3. Atelier Lilie
4. Atelier Judie
5. Atelier Viorate (Violet)
These fives games have never, and probably will never, come to North America. I specifically asked NIS America about this at E3 2005, and have followed up the question a few times in emails, and they seemed pretty honest with me in saying that it was quite unlikely. So...yeah.
If you watch your Atelier opening sequences, they're numbered "Project A#."
Atelier Iris - Project A6
Atelier Iris 2 - Project A7
Atelier Iris 3 - Project A8
Mana Khemia - Project A9
Also, for what it's worth, we have ALL the soundtracks for those old Atelier games reviewed in our soundtracks section.