internet - Is there a free copy of this early (earliest?) siddur online?

A footnote in the Rosenfeld selichot book said Rav Amram Gaon was approached by Spanish Jews in the 800's with a request to allow the writing down the daily prayers, something that was prohibited by the gemara (Shabbat 115a).

Is there a copy of this siddur on the web (ideally for free)?

I found what seems to be his siddur for sale here http://www.moznaim.com/siddur-rav-amram-gaon.html

Answer

Seder Rav Amram Gaon can be found on Hebrewbooks.org for free in two pdfs: here and here.