diff --git a/asl_articles/articles.py b/asl_articles/articles.py
index 4ea6094..3e6cbf1 100644
--- a/asl_articles/articles.py
+++ b/asl_articles/articles.py
@@ -61,6 +61,12 @@ def get_article_vals( article, add_type=False ):
         vals[ "type" ] = "article"
     return vals
 
+def get_article_sort_key( article ):
+    """Get an article's sort key."""
+    # NOTE: This is used to sort articles within their parent publication.
+    # NOTE: Articles should always have a seq# but sometimes they might not (e.g. created via a fixture).
+    return 999 if article.article_seqno is None else article.article_seqno
+
 # ---------------------------------------------------------------------
 
 @app.route( "/article/create", methods=["POST"] )
diff --git a/asl_articles/publications.py b/asl_articles/publications.py
index b831f54..517fdff 100644
--- a/asl_articles/publications.py
+++ b/asl_articles/publications.py
@@ -8,7 +8,7 @@ from flask import request, jsonify, abort
 
 from asl_articles import app, db
 from asl_articles.models import Publication, PublicationImage, Article
-from asl_articles.articles import get_article_vals
+from asl_articles.articles import get_article_vals, get_article_sort_key
 from asl_articles.tags import do_get_tags
 from asl_articles import search
 from asl_articles.utils import get_request_args, clean_request_args, clean_tags, encode_tags, decode_tags, \
@@ -63,14 +63,15 @@ def get_publication_vals( pub, include_articles, add_type=False ):
         "time_created": int( pub.time_created.timestamp() ) if pub.time_created else None,
     }
     if include_articles:
-        articles = sorted( pub.articles, key=lambda a: 999 if a.article_seqno is None else a.article_seqno )
-        vals[ "articles" ] = [ get_article_vals(a) for a in articles ]
+        articles = sorted( pub.articles, key=get_article_sort_key )
+        vals[ "articles" ] = [ get_article_vals( a ) for a in articles ]
     if add_type:
         vals[ "type" ] = "publication"
     return vals
 
 def get_publication_sort_key( pub ):
     """Get a publication's sort key."""
+    # NOTE: This is used to sort publications within their parent publisher.
     return int( pub.time_created.timestamp() ) if pub.time_created else 0
 
 # ---------------------------------------------------------------------
diff --git a/asl_articles/search.py b/asl_articles/search.py
index 9f28774..d9aa477 100644
--- a/asl_articles/search.py
+++ b/asl_articles/search.py
@@ -16,7 +16,7 @@ from asl_articles import app, db
 from asl_articles.models import Publisher, Publication, Article, Author, Scenario, get_model_from_table_name
 from asl_articles.publishers import get_publisher_vals
 from asl_articles.publications import get_publication_vals, get_publication_sort_key
-from asl_articles.articles import get_article_vals
+from asl_articles.articles import get_article_vals, get_article_sort_key
 from asl_articles.utils import decode_tags, to_bool
 
 _search_index_path = None
@@ -129,7 +129,8 @@ def search_publication( pub_id ):
     if not pub:
         abort( 404 )
     results = [ get_publication_vals( pub, True, True ) ]
-    for article in pub.articles:
+    articles = sorted( pub.articles, key=get_article_sort_key )
+    for article in articles:
         results.append( get_article_vals( article, True ) )
     return jsonify( results )