The Pennsylvania chapter of the Council on American-Islamic Relations says it will begin what it calls a public awareness campaign Wednesday against the “World of Islam” books by Mason Crest Publishing.

Mason Crest partnered with the Philadelphia-based Foreign Policy Research Institute to produce the 10-book series, which is designed for ages 10 and older.

It was not immediately clear where the series is being used, either in classrooms or libraries.

The publisher, based in the Philadelphia suburb of Broomall, did not return a request for comment.

Institute president Harvey Sicherman said Tuesday that he is mystified by the reaction to the series.