Jon RacherBaumer, THE UNIVERSAL CARD, Tannens 1975. soft cover
Excellent treatise on the Universal Card plot, with many ideas from Marlo (as you'd expect) but also from Johnny Thompson and Bruce Cervon. Mostly using custom gaffed cards (not included). Some of the gaffs are relatively easy to make or get, but others would require some expert workmanship. (I fondly remember making many of these cards myself when I first read this book in 1975. ) An important piece of Card magic Literature
Hard to find now. One listed on Amazon at $100. Another unpictured used copy listed on Amazon at $20. A few available on eBay from Australia for $38 including shipping (to the USA). Avoid the wait and the hassles and also get it here for less.