diff --git a/main.py b/main.py
index 9246893..9709b07 100644
--- a/main.py
+++ b/main.py
@@ -25,11 +25,6 @@ from rating import Rating, RatingForm, RatingSchema
 from loan import Loan, LoanForm, LoanSchema
 from series import Series, SeriesForm, SeriesSchema
 
-# allow jinja2 to call this python function
-app.jinja_env.globals['GetCovertypeById'] = GetCovertypeById
-app.jinja_env.globals['GetOwnedById'] = GetOwnedById
-app.jinja_env.globals['GetConditionById'] = GetConditionById
-
 ####################################### CLASSES / DB model #######################################
 book_author_link = db.Table('book_author_link', db.Model.metadata,
     db.Column('book_id', db.Integer, db.ForeignKey('book.id')),
@@ -51,10 +46,21 @@ class Book_Loan_Link(db.Model):
     book_id = db.Column(db.Integer, db.ForeignKey('book.id'), unique=True, nullable=False, primary_key=True)
     loan_id = db.Column(db.Integer, db.ForeignKey('loan.id'), unique=True, nullable=False, primary_key=True)
 
+    def __repr__(self):
+        return "<book_id: {}, loan_id: {}>".format(self.book_id, self.loan_id)
+
 class Book_Series_Link(db.Model):
     __tablename__ = "book_series_link"
     book_id = db.Column(db.Integer, db.ForeignKey('book.id'), unique=True, nullable=False, primary_key=True)
     series_id = db.Column(db.Integer, db.ForeignKey('series.id'), unique=True, nullable=False, primary_key=True)
+    book_num = db.Column(db.Integer)
+
+    def __repr__(self):
+        return "<book_id: {}, series_id: {}, book_num: {}>".format(self.book_id, self.series_id, self.book_num)
+
+def SeriesBookNum(series_id, book_id):
+    bsl=Book_Series_Link.query.filter( Book_Series_Link.book_id==book_id, Book_Series_Link.series_id==series_id ).all()
+    return bsl[0].book_num
 
 class Book_Sub_Book_Link(db.Model):
     __tablename__ = "book_sub_book_link"
@@ -92,6 +98,9 @@ class Book(db.Model):
 class Book_Sub_Book_LinkSchema(ma.SQLAlchemyAutoSchema):
     class Meta: model = Book_Sub_Book_Link
 
+class Book_Series_LinkSchema(ma.SQLAlchemyAutoSchema):
+    class Meta: model = Book_Series_Link
+
 # Note not ordering this in the code below as, I can't work out how to use
 # jinja2 to iterate over orderedDict - seems it doesnt support it?
 # so I just hacked a list of keys in book.html
@@ -100,6 +109,7 @@ class BookSchema(ma.SQLAlchemyAutoSchema):
     publisher = ma.Nested(PublisherSchema, many=True)
     genre = ma.Nested(GenreSchema, many=True)
     loan = ma.Nested(LoanSchema, many=True)
+    series = ma.Nested(Book_Series_LinkSchema, many=True)
     parent_ref = ma.Nested(Book_Sub_Book_LinkSchema, many=True)
     child_ref = ma.Nested(Book_Sub_Book_LinkSchema, many=True)
     class Meta: model = Book
@@ -122,6 +132,12 @@ class BookForm(FlaskForm):
     blurb = TextAreaField('Blurb:')
 
 
+# allow jinja2 to call this python function
+app.jinja_env.globals['GetCovertypeById'] = GetCovertypeById
+app.jinja_env.globals['GetOwnedById'] = GetOwnedById
+app.jinja_env.globals['GetConditionById'] = GetConditionById
+app.jinja_env.globals['SeriesBookNum'] = SeriesBookNum
+
 ### DDP: do I need many=True on Author as books have many authors? (or in BookSchema declaration above?)
 book_schema = BookSchema()
 books_schema = BookSchema(many=True)
@@ -149,7 +165,7 @@ def books_for_loan(id):
 @app.route("/books_for_series/<id>", methods=["GET"])
 def books_for_series(id):
     books = Book.query.join(Book_Series_Link).filter(Book_Series_Link.series_id==id).order_by(Book.id).all()
-    return render_template("books_for_series.html", books=books)
+    return render_template("books_for_series.html", books=books, series_id=id)
 
 @app.route("/book/<id>", methods=["GET"])
 def book(id):
diff --git a/templates/books_for_series.html b/templates/books_for_series.html
index 8efcc56..c5f0690 100644
--- a/templates/books_for_series.html
+++ b/templates/books_for_series.html
@@ -7,12 +7,20 @@
       {% for book in books %}
         <tr>
 		  {% if book.sub_book_num is defined %}
-		  	<td data-sort="{{book.parent_id}}.{{book.sub_book_num}}"><a href="/book/{{book.id}}">&nbsp;&nbsp;&nbsp;&nbsp;{{book.title}}</a></td>
+		  	<td><a href="/book/{{book.id}}">&nbsp;&nbsp;&nbsp;&nbsp;{{book.title}}</a></td>
 		  {% else %}
-		  	<td data-sort="{{book.id}}"><a href="/book/{{book.id}}">{{book.title}}</a></td>
+		  	<td><a href="/book/{{book.id}}">{{book.title}}</a></td>
 		  {% endif %}
-		  <td>not yet:</a></td>
+		  <td data-sort="{{series_id, SeriesBookNum( series_id, book.id )}}">{{ SeriesBookNum( series_id, book.id ) }}
+		  </a></td>
 		</tr>
       {% endfor %}
 	</tbody>
 	</table>
+	<script src="https://cdn.datatables.net/1.10.22/js/jquery.dataTables.min.js"></script>
+	<script src="https://cdn.datatables.net/1.10.22/js/dataTables.bootstrap4.min.js"></script>
+	<script>
+	$(document).ready(function() { 
+		$('#book_table').DataTable( { "paging": false, "searching": false, "info": false, "order": [[1, 'asc']] } );
+	} );
+	</script>