A section of the 1937/38 Official Michigan Highway Map, Winter Edition showing the relocated US 41/M-28 along Teal Lake between Ishpeming and Negaunee in Michigan's Marquette County.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
{{Information |Description=A section of the 1937/38 ''Official Michigan Highway Map'', Winter Edition showing the relocated US 41/M-28 along Teal Lake between Ishpeming and Negaunee in Michigan's Marquette County. |Source=Michigan State Highway Department