I have a set of the cards. Most of the information is either wrong or redundant. It will tell you to make a solar still, give CPR instructions that are no longer the satndard repititions, and so forth. <br><br>I too am interested in a set cards to carry in my wallet and psk. I would think something with information I were likely to forget would be the most usefull ie pressure point locations, cpr, fishing knots.<br><br>The most useful I have found thus far is the SAS mini book. It is complete with all of the information of the big nook, yet it fits ina pocket. I carry one in my urban pack along with Eric Weis's Wilderness First Aid Book.