This book, "Dropped D Tuning For Fingerstyle Guitar" by Tom Ball is another one of those mixed bags for me.
The good, there is 17 tunes to work thru, and they range from Advanced Beginner to Advanced. There is a LOT of great info on the artists who wrote the songs, along with some pics of the Original 78rpm labels, covers, and advertisements. The printing is clean and crisp, and a pretty good size, so it's easy to read. The CD production is top notch, this is another one that you could just put in to listen to. And it also has 2 Bonus tracks at the end. The Original 78 recordings of the first know release of a Solo Guitar tune in Dropped D, and a Blind Blake tune in Dropped D.
Now the bad, there are whole measures missing from the notation, and some of it is just plain wrong. The wrong ones are not to bad, because they are just variations on what has gone before pretty much. But the 2 songs that are missing measures are a different matter (one is missing 4 measures!). This is just not right, and makes this book a "maybe" on my rating chart. You could sit there and figure it out, but why? You pay for a whole book, not a part of one.
Overall, if you would like to learn some pretty cool Dropped D songs to add to your list, and are capable of figuring out parts, get this book. But if you just want a book to just sit down and run straight thru, this is not it.