Day 20: Movement – Amtrak Rail Routes by Ridership 30 Day Map Challenge 2021Christian PrzybylekDecember 21, 2021#30DayMapChallenge2021, Amtrak, RailroadsComment
Day 19: Island(s) – Vintage Nautical Style Map of the Florida Keys 30 Day Map Challenge 2021Christian PrzybylekDecember 19, 2021#30DayMapChallenge2021, IslandsComment
Day 18: Water – Using the Spilhaus World Ocean Map in a Square Projection to map the World’s Major Ocean Currents 30 Day Map Challenge 2021, OceansChristian PrzybylekDecember 18, 2021#30DayMapChallenge2021, Oceans Comment
