Pemper, Frank: Ricardo's Radiant Cards © Frank Pemper, WN Softcover, folded manuscript, 5.5x8.5", 2 pages

Image courtesy eBay seller rrath

Comments: Manuscript came with special cards for this packet routine. Four face up cards turn face down one at a time; red backs change to blue backs, and then mirror backed cards, then all the cards become identical.

Contents (from book):

1 Ricardo's Radiant Cards
1 Method and Routine: through page 2