I had the wonderful opportunity to visit with about a hundred or so Weston prints in a Chattanooga, TN art museum a year or two ago. I also own or have read about every book featuring reproductions of Weston prints (at least the books I can lay my hands on).
I agree with the original poster here that many books that reproduce Weston prints do so with a wonderful warmtone ink (though not all: "California and the West" suffers from poor reproductions that were, I'm sure, the best available at the time but contain very neutral, anemic blacks). See " Edward Weston: Photography and Modernism" for some stunning examples.
Based on my experience of seeing original Weston prints in a museum setting, the reproductions in books tend to be warmer than the originals, with the exception of his platinum prints which are, or course, quite warm in the originals. This leads me to the uncomfortable position of preferring in some cases the tone of the book reproductions over the originals! There is, though, a very special quality to an original Weston print. In my own opinion, it's the mid-tones of Weston's prints that really resonate with life.
cheers,
--Philip.