Are you looking for material on the Canons of Dort since it is the 400th anniversary of the Synod?
A good book to introduce your children to the book is The Glory of Grace By William Boekestein, The Glory of Grace.
Dr. Cornelius Venema has a nice fairly short work on the Canons entitled, But for the Grace of God.
Crisis in the Reformed Churches is an oldie but a goodie. This collection of essays that will not disappoint.
And I hear some new ones are coming out. We will keep you up to date on new books.