diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index d7ad60750..c1a98617b 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -15,11 +15,16 @@
 #
 #######################################################################
 
+include (../CMake/FLTK-Functions.cmake)
+include (../CMake/fl_create_example.cmake)
+
 set (EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/../bin)
 set (TESTFILE_PATH ${CMAKE_CURRENT_BINARY_DIR}/../data)
 
-include (../CMake/FLTK-Functions.cmake)
-include (../CMake/fl_create_example.cmake)
+# create data and binary directory to copy scripts and data files
+
+file (MAKE_DIRECTORY ${EXECUTABLE_OUTPUT_PATH})
+file (MAKE_DIRECTORY ${TESTFILE_PATH})
 
 #######################################################################
 # audio libs for test apps
@@ -202,17 +207,11 @@ endif (OPTION_BUILD_SHARED_LIBS)
 
 endif (NOT ANDROID)
 
-# We need some support files for the demo programs:
+#####################################################
+# We need some support files for the demo programs
+#####################################################
 
-# Note: this is incomplete as of July 2020
-# Todo: currently all files are copied, but some of them may need configuration:
-# - demo.menu: help_dialog (help_dialog.html) can't find its images (not copied)
-
-# create data directory for test and demo programs if it doesn't exist
-
-file (MAKE_DIRECTORY ${TESTFILE_PATH})
-
-# copy the test files
+# copy the required test files
 
 file (COPY
   demo.menu rgb.txt browser.cxx editor.cxx valuators.fl
@@ -220,6 +219,13 @@ file (COPY
   DESTINATION ${TESTFILE_PATH}
 )
 
+# copy the image directory for help_dialog.html
+
+file (COPY
+  ${CMAKE_CURRENT_SOURCE_DIR}/images
+  DESTINATION ${TESTFILE_PATH}
+)
+
 # the main test program 'demo' needs additional hints and configurations
 
 target_compile_definitions (demo PRIVATE GENERATED_BY_CMAKE)
diff --git a/test/help_dialog.html b/test/help_dialog.html
index 01809f234..dffaf4cb1 100644
--- a/test/help_dialog.html
+++ b/test/help_dialog.html
@@ -1,5 +1,19 @@
 <!--
-    Test the Fl_Help_View's ability to parse simple HTML.
+ *
+ * Test file for Fl_Help_View for the Fast Light Tool Kit (FLTK).
+ *
+ * Copyright 1998-2020 by Bill Spitzak and others.
+ *
+ * This library is free software. Distribution and use rights are outlined in
+ * the file "COPYING" which should have been included with this file.  If this
+ * file is missing or damaged, see the license at:
+ *
+ *     https://www.fltk.org/COPYING.php
+ *
+ * Please see the following page on how to report bugs and issues:
+ *
+ *     https://www.fltk.org/bugs.php
+ *
 -->
 <H1>Simple HTML Tests</H1>
 <UL>
@@ -211,16 +225,16 @@ End of DL.
   <TR>
     <TD>Column 1</TD>  <TD>Column 2</TD>
   </TR><TR>
-    <TD><IMG SRC="../documentation/src/FL200.png"></TD>
+    <TD><IMG SRC="images/FL200.png"></TD>
     <TD>This is the FLTK logo</TD>
   </TR><TR>
-    <TD><IMG SRC="../documentation/src/tiny.png"></TD>
+    <TD><IMG SRC="images/tiny.png"></TD>
     <TD>Tiny FLTK logo.</TD>
   </TR><TR>
-    <TD><IMG SRC="../documentation/src/Fl_Value_Input.png"></TD>
+    <TD><IMG SRC="images/Fl_Value_Input.png"></TD>
     <TD>This is an image of Fl_Value_Input</TD>
   </TR><TR>
-    <TD><IMG SRC="../documentation/src/Fl_Value_Output.png"></TD>
+    <TD><IMG SRC="images/Fl_Value_Output.png"></TD>
     <TD>This is an image of Fl_Value_Output</TD>
   </TR>
 </TABLE>
@@ -237,7 +251,7 @@ This text should be in a paragraph break. This is paragraph #1 of 2.
 This text should be in a paragraph break as well. This is paragraph #2 of 2.
 <P>
 What follows should be a centered image.<BR>
-<IMG SRC="../documentation/src/FL200.png"><BR>
+<IMG SRC="images/FL200.png"><BR>
 That should be a centered image.
 <P>
 </center>
diff --git a/test/images/FL200.png b/test/images/FL200.png
new file mode 100644
index 000000000..b227fc794
Binary files /dev/null and b/test/images/FL200.png differ
diff --git a/test/images/Fl_Value_Input.png b/test/images/Fl_Value_Input.png
new file mode 100644
index 000000000..f555c7059
Binary files /dev/null and b/test/images/Fl_Value_Input.png differ
diff --git a/test/images/Fl_Value_Output.png b/test/images/Fl_Value_Output.png
new file mode 100644
index 000000000..af2f362d0
Binary files /dev/null and b/test/images/Fl_Value_Output.png differ
diff --git a/test/images/tiny.png b/test/images/tiny.png
new file mode 100644
index 000000000..133ecd10e
Binary files /dev/null and b/test/images/tiny.png differ