Quote Originally Posted by Bill Burk View Post
Found 'em. Kodak Filters for Scientific and Technical Uses, Kodak Publication No. B-3 - Page 51.

Doesn't show whether exposure before or after makes a difference. But the side which had "prolonged" exposure to safelight (the proper safelight filter with the proper bulb at the proper distance... but for too long)... was clearly degraded.
Bill, when all else fails you can always go back to my "article" with the Kodak and Ilford resource links (shameless plug). Here it is under publication K-4:


The point I was making is that the test is intended to show the effects of the same amounts of non-image exposure both before and after the image exposure (analogous to pre and post flashing).