Hi,
I searched a few databases and couldn't find any articles about teachers who have done this, but it seems like a good idea. Librarians would be the best ones to do this kind of work!
As one other RR volunteer suggested, you should ask around on listservs and groups to ask what others have done to alleviate book shortages. In my searches I found that book shortages are dealt with in various ways by school systems.
See:
Title: Analysis: How New York City public schools are working with the private sector to make up for shortages in school supplies
Authors: ALEX CHADWICK
Source: Day to Day (NPR); 12/22/2003
and
Title: Textbook Shortages Spur Digital Alternatives.
Authors: Hurst, Marianne D.
Source: Education Week; 5/5/2004, Vol. 23 Issue 34, p5-5, 1/2p
I searched Ebsco host to get these articles.
Good luck!