diff --git a/src/OEBPS/Images/16-shades-of-gray-image.png b/src/OEBPS/Images/16-shades-of-gray-image.png
deleted file mode 100644
index 74f064c..0000000
Binary files a/src/OEBPS/Images/16-shades-of-gray-image.png and /dev/null differ
diff --git a/src/OEBPS/Images/custom_preview_alt_style.png b/src/OEBPS/Images/custom_preview_alt_style.png
deleted file mode 100644
index c61759b..0000000
Binary files a/src/OEBPS/Images/custom_preview_alt_style.png and /dev/null differ
diff --git a/src/OEBPS/Images/custom_preview_dark_style.png b/src/OEBPS/Images/custom_preview_dark_style.png
deleted file mode 100644
index 1da8ab6..0000000
Binary files a/src/OEBPS/Images/custom_preview_dark_style.png and /dev/null differ
diff --git a/src/OEBPS/Images/default_preview_dark_style.png b/src/OEBPS/Images/default_preview_dark_style.png
deleted file mode 100644
index 4c68bd6..0000000
Binary files a/src/OEBPS/Images/default_preview_dark_style.png and /dev/null differ
diff --git a/src/OEBPS/Images/preview-window-toolbar-cycle-grayed.png b/src/OEBPS/Images/preview-window-toolbar-cycle-grayed.png
deleted file mode 100644
index 186f14d..0000000
Binary files a/src/OEBPS/Images/preview-window-toolbar-cycle-grayed.png and /dev/null differ
diff --git a/src/OEBPS/Images/preview-window-toolbar-cycle-icon.png b/src/OEBPS/Images/preview-window-toolbar-cycle-icon.png
deleted file mode 100644
index 5f737bd..0000000
Binary files a/src/OEBPS/Images/preview-window-toolbar-cycle-icon.png and /dev/null differ
diff --git a/src/OEBPS/Images/three-stage-toggler.gif b/src/OEBPS/Images/three-stage-toggler.gif
deleted file mode 100644
index ba85d52..0000000
Binary files a/src/OEBPS/Images/three-stage-toggler.gif and /dev/null differ
diff --git a/src/OEBPS/Images/ui_customize_toc_redocked_as_tab.png b/src/OEBPS/Images/ui_customize_toc_redocked_as_tab.png
deleted file mode 100644
index 639ecb5..0000000
Binary files a/src/OEBPS/Images/ui_customize_toc_redocked_as_tab.png and /dev/null differ