#DYK Maryland has 16 interstate highways, 14 U.S. highways, and an extensive system of state highways? All those roadways make for quite an engaging magnetic puzzle! Solve our new magnetic puzzles on any magnetic surface. Available for Maryland and Baltimore City at shop.mdhistory.org! Click the “Museum Store” tab in our bio link to shop. #ShopMDHistory #MDHistory #ShopSmall #MagneticPuzzle #WhatsInStore