With the decline of film photography, it seems that there is no use for "The Negative" anymore. But what about "The Print" and other books where Adams teaches about light, technique and, well... photography? Are these still useful today?
There certainly is a use for his The Negative. It covers light, exposure and the zone system which are relevant to digital. And The Print, which covers post-production in a darkroom has relevance to digital post-processing - can still dodge and burn in Photoshop to bring out the best in a digital "negative"
Not to mention those of use who still shoot film and have darkrooms!
But even those shooting digital can learn a lot from Adams.