I turned to its index. Nothing about indexes was in the index. The final choice was scanning the whole book, trying to remember whether the quote was near the front, in the middle or near the end. Starting in the middle and working toward the back, I found the quote on page 277. Of course, there are indexes and indexes.
Any lazy simpleton can make an index of proper names.
The only good index is topical, and for my index, I value mesquite as highly as Brushy Creek and spurs as much as Spur Ranch. Though Dobie acknowledged that an index has far from universal appeal to readers, like the legendary 19th Century Ranger Capt. A bad index is better than no index at all, which makes a non-fiction book virtually worthless to anyone who does not have time to read it from cover to cover. Librarians rightly disdain index-less titles. But, to reduce Dobie's remark to simile, an index of nothing but names is skim milk compared to cream.