Kudos to Steve Smith's 4000 Footers of the WM, which was just updated in a 2nd Edition. It delves into a great deal about the geology of the area, as well as surronding peaks of the specific 4K's, and possesses a nice amount of history about each peak. While the WMG certainly is the Hiker's Bible, replete with the maps you can purchase, Steve Smith's books make it a bit more personal.
"LIVE FREE OR DIE...DEATH IS NOT THE WORST OF ALL EVILS." Gen. John Stark. "by reason of much foule weather and Extreme Bad Woods to travel in..." From the letter of my Great Uncle, Samuel Willard (accompanied by my grandfather Henry), to Governor Dummer on August 16, 1725, explaining the reason for his return, being instructed to "range all the country", of the Wawobadenik (White Mountains) July 19-August 16, 1725. I am a 13th generation New Englander and proud of it.