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@@ -340,7 +340,7 @@ They also immediately identified some limitations, which are common problems tha
 These limitations include handling faults in the student code, making sure students can't modify the grader, and having to define an interface through which the student code is run.
 
 #+CAPTION: Example of a punch card.
-#+CAPTION: Picture by Arnold Reinhold, released under the CC BY-SA 4.0 licence via WikiMedia Commons.
+#+CAPTION: Picture provided by Bart Coppens in personal correspondence.
 #+NAME: fig:introductionpunchard
 [[./images/introductionpunchcard.jpg]]
 
diff --git a/images/introductionpunchcard.jpg b/images/introductionpunchcard.jpg
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