Official correspondence about the GLSHS shipwreck survey grant...
May 2003 E-mail between the Federal Highway Administration & the Michigan Department of Transportation about the GLSHS shipwreck survey grant:
July 10, 2003 Federal Highway Administration letter about the GLSHS shipwreck survey grant - reports that State Archaeologist Halsey endorsed GLSHS “surveying” the same shipwrecks they plundered:
Michigan State Police Freedom of Information Act response for a copy of the Traffic Control Order - "The documents do exist within this department".