diff --git a/book/book.tex b/book/book.tex
index b70919a..d9c7ddd 100644
--- a/book/book.tex
+++ b/book/book.tex
@@ -50,14 +50,16 @@ produce a lot of \ch{CO2}.
 \end{figure}
 
 % Works
+% Generate first with: cd figures && pdflatex fig-ethanol-oxidation-external.tex
 \begin{figure}[!htb]
   \begin{center}
-    \includegraphics{figures/fig-ethanol-oxidation-external.tex}
+    \includegraphics{figures/fig-ethanol-oxidation-external.pdf}
     \caption[Acetic acid creation]{Oxygen is required to create acetic
         acid~\cite{acetic+acid+production}.}%
   \end{center}
 \end{figure}
 
+% Does not work
 \begin{figure}[!htb]
 \begin{center}
   \input{figures/fig-life-planet-sourdough-timeline.tex}
@@ -65,8 +67,8 @@ produce a lot of \ch{CO2}.
 \end{center}
 \end{figure}
 
-% In this case generate the graphic with pdflatex first: pdflatex fig-life-planet-sourdough-timeline-external.pdf
-% Then it will show up properly.
+% Works
+% In this case generate the graphic with pdflatex first: cd figures && pdflatex fig-life-planet-sourdough-timeline-external.pdf
 \begin{figure}[!htb]
   \includegraphics{figures/fig-life-planet-sourdough-timeline-external.pdf}
   \caption[Sourdough microbiology timeline]{Timeline works embedded as pdf}%
diff --git a/book/figures/fig-ethanol-oxidation-external.pdf b/book/figures/fig-ethanol-oxidation-external.pdf
index d5ec40f..3ad826e 100644
Binary files a/book/figures/fig-ethanol-oxidation-external.pdf and b/book/figures/fig-ethanol-oxidation-external.pdf differ
diff --git a/book/figures/fig-life-planet-sourdough-timeline-external.pdf b/book/figures/fig-life-planet-sourdough-timeline-external.pdf
index f96a44a..ede12c1 100644
Binary files a/book/figures/fig-life-planet-sourdough-timeline-external.pdf and b/book/figures/fig-life-planet-sourdough-timeline-external.pdf differ