diff --git a/tests/examples_arguments_syntax/connected_scatterplot.py b/tests/examples_arguments_syntax/connected_scatterplot.py
deleted file mode 100644
index 8528fb86f4..0000000000
--- a/tests/examples_arguments_syntax/connected_scatterplot.py
+++ /dev/null
@@ -1,18 +0,0 @@
-"""
-Connected Scatter Plot (Lines with Custom Paths)
-------------------------------------------------
-
-This example show how the order encoding can be used to draw a custom path. The dataset tracks miles driven per capita along with gas prices annually from 1956 to 2010.
-It is based on Hannah Fairfield's article 'Driving Shifts Into Reverse'. See https://archive.nytimes.com/www.nytimes.com/imagepages/2010/05/02/business/02metrics.html for the original.
-"""
-# category: scatter plots
-import altair as alt
-from vega_datasets import data
-
-source = data.driving()
-
-alt.Chart(source).mark_line(point=True).encode(
-    alt.X('miles', scale=alt.Scale(zero=False)),
-    alt.Y('gas', scale=alt.Scale(zero=False)),
-    order='year'
-)
diff --git a/tests/examples_arguments_syntax/line_custom_order.py b/tests/examples_arguments_syntax/line_custom_order.py
index d961e5d455..c564c33490 100644
--- a/tests/examples_arguments_syntax/line_custom_order.py
+++ b/tests/examples_arguments_syntax/line_custom_order.py
@@ -1,7 +1,7 @@
 """
 Line Chart with Custom Order
 ----------------------------
-By default, the line’s path (order of points in the line) is
+By default, the line's path (order of points in the line) is
 determined by data values on the temporal/ordinal field.
 However, a field can be mapped to the order channel for a custom path.
 
@@ -10,6 +10,9 @@
 order channel to sort the points in the line by time field (year).
 The earliest year (1956) is one endpoint and the latest year (2010)
 is the other endpoint.
+
+This is based on Hannah Fairfield's article 'Driving Shifts Into Reverse'.
+See https://archive.nytimes.com/www.nytimes.com/imagepages/2010/05/02/business/02metrics.html.
 """
 # category: line charts
 import altair as alt
diff --git a/tests/examples_methods_syntax/connected_scatterplot.py b/tests/examples_methods_syntax/connected_scatterplot.py
deleted file mode 100644
index a5902841c9..0000000000
--- a/tests/examples_methods_syntax/connected_scatterplot.py
+++ /dev/null
@@ -1,18 +0,0 @@
-"""
-Connected Scatter Plot (Lines with Custom Paths)
-------------------------------------------------
-
-This example show how the order encoding can be used to draw a custom path. The dataset tracks miles driven per capita along with gas prices annually from 1956 to 2010.
-It is based on Hannah Fairfield's article 'Driving Shifts Into Reverse'. See https://archive.nytimes.com/www.nytimes.com/imagepages/2010/05/02/business/02metrics.html for the original.
-"""
-# category: scatter plots
-import altair as alt
-from vega_datasets import data
-
-source = data.driving()
-
-alt.Chart(source).mark_line(point=True).encode(
-    alt.X('miles').scale(zero=False),
-    alt.Y('gas').scale(zero=False),
-    order='year'
-)
diff --git a/tests/examples_methods_syntax/line_custom_order.py b/tests/examples_methods_syntax/line_custom_order.py
index 4ff2f72741..4681c2aee7 100644
--- a/tests/examples_methods_syntax/line_custom_order.py
+++ b/tests/examples_methods_syntax/line_custom_order.py
@@ -1,7 +1,7 @@
 """
 Line Chart with Custom Order
 ----------------------------
-By default, the line’s path (order of points in the line) is
+By default, the line's path (order of points in the line) is
 determined by data values on the temporal/ordinal field.
 However, a field can be mapped to the order channel for a custom path.
 
@@ -10,6 +10,9 @@
 order channel to sort the points in the line by time field (year).
 The earliest year (1956) is one endpoint and the latest year (2010)
 is the other endpoint.
+
+This is based on Hannah Fairfield's article 'Driving Shifts Into Reverse'.
+See https://archive.nytimes.com/www.nytimes.com/imagepages/2010/05/02/business/02metrics.html.
 """
 # category: line charts
 import altair as alt