Über mich
Resources (e.g., lists of recommendations) used as partial selection tools include:

Adult Learning Resource Center
http://www.thecenterweb.org/alrc/pdfs/adult-esl-bib.pdf

Amazon.com (aggregated critical/publisher reviews, customer reviews, sales rank)

California State Library Literacy Services
http://libraryliteracy.org/webcasts/02-23-08/index.html
http://libraryliteracy.org/webcasts/02-23-08/picture_books_adults.pdf

Center for Adult English Language Acquisition
http://www.cal.org/Caela/esl_resources/digests/childlit.html

Colorado Department of Education
http://www.cde.state.co.us/cdeadult/download/pdf/ESLTextRecs1105Rev.pdf

Dave's ESL Cafe discussion forums
http://www.eslcafe.com/

ESL Jobs Forum discussion forums
http://www.esl-jobs-forum.com/

LibraryThing.com (reader reviews)

Literacy Volunteers of Western Cook County, IL
http://www.adultslearnenglish.org/Recommended_English_as_a_SecondLanguage_books....

Reid, S. (2002). Book bridges for ESL students: Using young adult and children's literature to teach ESL. Scarecrow Press.

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Catalogs of several public libraries were browsed, but "ESL" collections were most comprehensively and consistently compared for:

Chicago Public Library
Dallas Public Library
El Paso Public Library
Houston Public Library
Los Angeles Public Library
New York Public Library