Are Cable Differences Real? A Data Cache

There is significant disagreement in the audio community about whether cables make an audible difference in sound quality. Some of this disagreement comes from the point of view that it is well known that there are not or cannot be differences. To wit, in reply to observed differences between cables:
 
"This is the kind of black magic that makes me shake my head and cry."
 
"I, like many others, am convinced you can't hear a difference"
 
"There is NO WAY that substituting one (working) cable for another will influence sound quality. Period."
 
Many posters cite "evidence" for these views. Almost always, the admissible evidence is indicated to be either blind ABX listening tests or instrumented data. It got me to wondering what the published evidence of this form actually looks like (we publish plenty of straight-ahead observational listening tests here, so I'm leaving that out of this picture).
 
 
The purpose of this thread is to catalog instrumented tests and blind observational comparisons of cables that have been published.
 
The rules:
 
1. Please post only links to tests or (if not in violation of copyrights) actual test data.
 
2. Please be sure state what was tested and when
 
3. No comments, except to articulate details of the test method that you are posting (if you wish to comment, start a separate discussion thread)
 
Thanks.