Lengthy examinations of particular topics in history are often divided chronologically and written by different specialists.
The work is indexed and cross-referenced, with a bibliography following each article.
The work is aimed at both specialists in the field as well as the general reader.
According to a reviewer, "this reference work would be a valuable addition to the reference collections of academic and larger public libraries.
"[2] Another reviewer notes that most articles are authored by Americans and Mexicans to the exclusion of Europeans who write on Mexican topics in languages other than Spanish or English.