The book is considered a "clean" book - with only a little "language" used in context, virtually no violence or sex. I know the book has been read and enjoyed by young teenagers - but there is nothing that the average 13 year old would find shocking. Except perhaps all the housework women did back then!
irish
Ellis Island was the main federal Immigration station for the United States. Generally, all groups of immigrants arriving by boat would have been processed here in the 1880s.
13-20
The ticker symbol for CB Richard Ellis Group is CBG and it is traded on the New York Stock Exchange.
Relating to or aimed at a small specialized group
A "journal" could refer to almost any periodical publication. This is impossible to answer without more specifics, as a "journal" loosely defined could be aimed at any age group.
9-12 I think am not so sure.
Railroads
kamikaze
kamikaze
3-7
Early teens such as 13-15