One book you might want to consider is the Arizona & New Mexico version of Railroad Atlas by Mike Walker. It is a soft cover and I think they are around $20. It provides a pretty good overview and includes a number of abandon grades. It shows quite a web of trackwork in the forest south and north of Flag.
I have that...I finally found it...the ammount of trackage around Flag is amazing, just tracks radiating everywhere...too bad this book doesnt have a closer look at it with streets...I'd like to see where some of this wound through Flag.