Here we track external resources we used which are not explictly mentioned in the pages where they show:

• Helmet Roman PNG Icon, License: CC0, taken from: https://www.pngrepo.com/svg/267172/helmet-roman Used in: Lists 2, Glory to gladiators exercise https://en.softpython.org/lists/lists2-sol.html#Exercise—Glory-to-Gladiators!

• Cow Animals PNG Icon, License: CC0 taken from: https://www.pngrepo.com/svg/176700/cow-animals Used in: Lists 2, The railway outlaws exercise https://en.softpython.org/lists/lists2-sol.html#Exercise—The-railway-outlaws