Nope, I’ve skimmed through the files and there are no other books that raises your first aid skill to or above 8 other than the advanced emergency care book you’ve said earlier.
All first aid books
{
"id": "emergency_book",
"type": "BOOK",
"name": "Guide to Advanced Emergency Care",
"name_plural": "Guides to Advanced Emergency Care",
"description": "A thick textbook for paramedics describing advanced lifesaving procedures and field-expedient care methods.",
"weight": 2063,
"volume": 8,
"price": 9200,
"bashing": 8,
"material": [ "paper" ],
"symbol": "?",
"color": "blue",
"skill": "firstaid",
"required_level": 5,
"max_level": 8,
"intelligence": 10,
"time": 55,
"fun": -1
},
{
"id": "mag_firstaid",
"type": "BOOK",
"name": "Paramedics",
"name_plural": "Paramedics",
"description": "An educational magazine for EMTs.",
"weight": 60,
"volume": 1,
"price": 480,
"material": [ "paper" ],
"symbol": "?",
"color": "pink",
"skill": "firstaid",
"max_level": 1,
"intelligence": 1,
"time": 8,
"fun": 1
},
{
"id": "manual_first_aid",
"type": "BOOK",
"name": "The Big Book of First Aid",
"name_plural": "Big Books of First Aid",
"description": "It's big and heavy, but full of great information about first aid.",
"weight": 454,
"volume": 5,
"price": 2500,
"material": [ "paper" ],
"symbol": "?",
"color": "green",
"skill": "firstaid",
"max_level": 3,
"intelligence": 7,
"time": 20
},
{
"id": "pocket_firstaid",
"type": "BOOK",
"name": "Pocket Guide to First Aid",
"name_plural": "Pocket Guides to First Aid",
"description": "This pocket-sized leather-bound guide to first aid combines a wealth of concise information with simple to follow instructions and easy to read illustrations.",
"weight": 192,
"volume": 1,
"price": 4000,
"material": [ "paper", "leather" ],
"symbol": "?",
"color": "green",
"skill": "firstaid",
"max_level": 2,
"intelligence": 6,
"time": 20
},
{
"id": "textbook_firstaid",
"type": "BOOK",
"name": "First Responder Handbook",
"//": "College-level textbooks are Cheap at $60. Med book is likely more expensive.",
"description": "A hardbound book detailing advanced first aid techniques and field-expedient medical care.",
"weight": 1360,
"volume": 8,
"price": 8500,
"bashing": 4,
"material": [ "paper" ],
"symbol": "?",
"color": "blue",
"skill": "firstaid",
"required_level": 3,
"max_level": 6,
"intelligence": 8,
"time": 30
},
{
"id": "booklet_firstaid",
"type": "BOOK",
"name": "First Aid Kit Instruction Booklet",
"name_plural": "First Aid Kit Instruction Booklets",
"description": "Illustrated how-to guide for your first aid kit.",
"weight": 60,
"volume": 1,
"price": 480,
"material": [ "paper" ],
"symbol": "?",
"color": "pink",
"skill": "firstaid",
"max_level": 1,
"time": 8,
"fun": 1
}