Henry Flagler's private railcar, No. 91, was built in 1886 and carried
Henry Flagler south to Key West following the completion of his Over-Sea
Railroad in 1912. Today thousands of visitors tour the historic railcar
at the Flagler Museum in Palm Beach, Florida.
Another longer video that includes Whitehall, Flagler's mansion.
H/T and many thanks to Dan for the link to the first video.