Maybe you didn't know what a slip stroke was back in the day, but I sure did. As teenagers, my buddies and I would fool around trying it out.
You also mention players and articles, but fail to cite any...
Lou Figueroa
http://www.youtube.com/watch?v=qRKw56oAA-E
Turn the volume up Lou or maybe your eyes are perfect and you need to see someone about dominant ear placement :groucho:....
On the vast majority of these shots you will hear his hand sliding on the linen even when you cannot see his arm... It's a distinct sound...
As far as Cites I don't need them if this video exists.... I couldn't tell you the number of articles and books read over the years much less recall which ones mentioned Mosconi's stroke....
His name was mentioned in conjunction with the term slip stroke when I was maybe 20 and I researched and adopted a modified version of it similar to what is on the video... part back swing, part slip....
That was 23 years ago.... So I might be able to find the proper books or magazines to cite but until then I'll just listen to the music that his slip stroke makes on the video......