webbmaster wrote:For non-gaffs, and even with different color backs, see Ken Krenzel's Blues Progression from Ingenuities from Minch's Hermetic Press...
HHHhhmmmm... I believe that the correct reference would be Blues Progression
in David Regal's Close-Up & Personal
, page 187. David credits Ken Krenzel for the plot (Krenzel's Progressive Aces
). David presents a clear description and well-photographed write-up.
Magicpedia provides this information: Ken Krenzel first presented the problem in Epilogue no 16, November 1972, page 146 then published one of his methods in a one-man issue of Epilogue (Special Issue no 2, page 253, 1975, Progressive Aces).
This was also written up as The Multiple Cop Progressive Aces
in Harry Lorayne's book The Card Classics of Ken Krenzel