Traverse City service on the C&O ended on October 29, 1966. I can't find any evidence of the PRR picking up service.
Myrtle Beach appears to have been March 16, 1955.
Owensboro was sometime (I think late) in 1958.
Several of your Florida cities lasted until A-Day under the Seaboard Coast Line - see December 1970 timetable. These included #97/98 (section of the Champion) to Naples via Fort Myers, and another section to Venice via Sarasota. Direct service to Gainesville also ended on A-Day as the St Petersburg section of the South Wind/City of Miami was rerouted via Orlando.
The Silver Star (until October 1994), Palmetto (October 1994-February 1995), Silver Palm (November 1996-May 2002), and Palmetto again (May 2002-November 1, 2004) served Waldo, 15 miles northeast of Gainesville, with Gainesville listed in small text on timetables.
Myrtle Beach appears to have been March 16, 1955.
Owensboro was sometime (I think late) in 1958.
Several of your Florida cities lasted until A-Day under the Seaboard Coast Line - see December 1970 timetable. These included #97/98 (section of the Champion) to Naples via Fort Myers, and another section to Venice via Sarasota. Direct service to Gainesville also ended on A-Day as the St Petersburg section of the South Wind/City of Miami was rerouted via Orlando.
The Silver Star (until October 1994), Palmetto (October 1994-February 1995), Silver Palm (November 1996-May 2002), and Palmetto again (May 2002-November 1, 2004) served Waldo, 15 miles northeast of Gainesville, with Gainesville listed in small text on timetables.