Thanks Ed. It's a fairly comprehensive article, and still very relevant.
The following, however, unfortunately no longer rings very true, IMHO:
"Today most people are climbing better and cleaner than they did a few years ago, with a finer appreciation of the nuances of style than anyone possessed in the pioneering periods of American mountaineering." (That was 1974.)
Interestingly, the article doesn't mention the motivation of some climbers to create guides or topos in order to document their lines so as to "protect" them from encroachment/bolting by other parties. I suppose this is a more contemporary matter.
That's kind of a funny scenario. I climb a lot of obscure stuff around where I live, rarely drill, never 'report' routes, and it's not hard to imagine someone bosching their way up one of these things in the future. Paradoxically, it gives me the urge to at least leave something that indicates the line has been climbed, so it won't get fully desecrated later. But that makes me part of the problem too...