Captain Sammon

 

So we need to prove that it was indeed shipped from  Bone Valley  south of Orlando,  sent from there by rail almost entirely via a now - vanished  port on in Boca Grande on florida's SW coast.  

A 1981 edition of the Boca Beacon has a romantic sea tale in it featuring "Captain Sammon, Master of the S/S Millinocket, which was calling at Boca Grande about every two weeks, transporting phosphate to Searsport, Maine, New York and other east coast ports" 

Wikipedia: "Processed phosphate from the Bone Valley region was loaded onto waiting ocean-going cargo vessels via the Seaboard Air Line Railroad at the dock located on the southern tip of the island."