http://www.inkthinktank.com/index.html
In a quest for a list of titles that share examples of different nonfiction text structures, I can across this great website for nonfiction. It has an interesting blog written by the authors (I recognized many of the names), but it also has a super database that you can search based on age, topic or standard. I'm still searching for excellent examples of descriptive, sequential, compare/contrast, cause/effect, and problems solution structures, but this gem was worth the search. Check it out.