Mark Vogel: Louisville and Indiana in Indianapolis IN PIC 5
Mark Vogel: Louisville and Indiana passing semaphore signal in Indianapolis IN PIC 4
Mark Vogel: Louisville and Indiana passing semaphore signal in Indianapolis IN PIC 3
Mark Vogel: Louisville and Indiana passing semaphore signal in Indianapolis IN PIC 2
Mark Vogel: Semaphore signal in Indianapolis IN PIC 1
Mark Vogel: Louisville and Indiana Railroad yard at Jeffersonville IN