Not specifically about searching old text books but maybe about what's been happening to real learning:
https://www.nytimes.com/2007/11/07/washington/07neil.html
(I remembered Neil was involved in some of this)
https://www.motherjones.com/politics/2011/10/jeb-bush-digitial-learning-public-schools/
https://www.thenation.com/article/reading-between-lines/
http://fortune.com/2015/01/21/everybody-hates-pearson/