There's a 1970s dissertation on the premiere:
Bullard, Truman Campbell. "The First Performance of Igor Stravinsky's 'Sacre du printemps'." Ph.D. diss. The University of Rochester, Eastman School of Music, 1971.
You may be able to get a full-text PDF via Proquest Dissertations and Theses if you have access to an academic library. Here are links to info at WorldCat and Google Books.
It's been awhile since I looked at it, but I recall that there are three volumes and that the second of these is solely English translations of reviews and other contemporary accounts of the premiere. If nothing else, his bibliography should give you an idea of what's out there.
Accuradio also has some pretty good classical channels. If your area has a classical music radio station or NPR-type station with classical broadcasts, that can be really good. I love Performance Today!