Not sure what to really classify these book/resources as. Some would call them grid down, others SHTF, and even others might call them WORL medical books. However, no matter what you call them I think they are a great resource to check out for First Aid when help might not be right around the corner. The first two books that I will combine into one grouping were written for people that do not have access to doctors or dentist, such remote villages, missionaries, and such. However, they can be a great resource for those of us that want to bridge First Aid with Preparedness. The first book is called “Where there is no Doctor” the newer edition of it has the subtitle “A Village Health Care Handbook”. You can find the new 2020 version on Amazon for around $25 (paperback). You can also find the older (1992) version of it in digital form at the Internet Archive ( https://archive.org/details/Where_There_Is_No_Doctor_A_Village_Health_Care_Handbook_David_Werner/mode/1up ) The second book is called “Where there is no Dentist” again you can purchase the updated version (2019) from Amazon for about $15. It (1996 version) is also on the Internet Archive ( https://archive.org/details/Where_There_is_No_Dentist_Murray_Dickson/page/n2/mode/1up ) The next book I know of is called Ditch Medicine, however, it is out of print. You can still find used copies on Amazon or eBay for $40+, I did see that Amazon had a couple of new ones but they were like $330. Thankfully, this one is also available from the Internet Archive ( https://archive.org/details/Ditch_Medicine_Advanced_Field_Procedures_For_Emergencies_Hugh_Coffee_Paladin_Pre/page/n1/mode/2up ) The final two books are by the same author, one is just a shortened version of the main book. The main book is called “The Survival Medicine Handbook: A Guide for When Help is Not on the Way” and the shortened one is “The Ultimate Survival Medicine Guide: Emergency Preparedness for ANY Disaster”. Both of these are available from Amazon, about $38 for the main one, and $17 for the shortened one. They are written by Joseph Alton MD., and his wife Amy Alton ARNP (advanced registered nurse practitioner). Personally, if you can afford the higher cost I would just purchase the main book as it contains a great deal more information. These books are written from the point of view that you are preparing to be the primary medical caregiver in a crisis when normal medical care is not available, this can be something as simple as a major storm that makes travel impossible or all the way to the breakdown of society. If you can only get one of these books for your collection or medical resources I would highly recommend “The Survival Medicine Handbook” as the one to buy. Hope this information is helpful to someone.