Here is another one of those very interesting references in which the events are not dated. My sense is that this is from the 1870s. The book is FORE AND AFT: A STORY OF ACTUAL SEA LIFE, by Robert Brewer Dixon, in which he describes a voyage from New York to Vera Cruz, Mexico, on the "brig Elizabeth." The book was published in 1883. I have tried to locate information on the brig "Elizabeth", but there apparently were several of them dating back to the time of the American Revolution. I couldn't pin it down. The same was true with "Captain Bradley". There was a Robert Brewer Dixon who became a prominent physician in boston. He studied for his MD at Harvard from 1876-79. It is likely that this is the same person, in which case, these events at sea probably happened prior to his time at Harvard. He mentions in his first chapter that he has been at school at "Chauncy-hall School, Boston, and was at home on my summer vacation..." (p.2)

There is an interesting discussion of "stevedores" in this book in chapters IX and X. And in chapter X, Dixon gives us some "sailor songs," that are being used for stowing timber. They include, with music, "Haul the Bowline", "Coal Black Rose", and "Shanandore". So, here we have an example of one of the "Shenandoah" versions being used for loading by stevedores. What is also interesting is that Dixon mentions "Shanandore" at least two other times. On page 11, the crew is singing it as a windless chanty, as they are bringing up the anchor (I think). And on page 297, it is being used as a halyards chanty.

The verse given, on page 129, for the loading is

   For seven long years I courted Sally.
   Hurrah, you rollin' river!
   I courted Sally down in yon valley.
   Ah, ha! I'm bound away on the wild Missouri.

Here is the link:

http://books.google.com/books?id=atvSkDe26l8C&pg=RA1-PA127&dq=stevedore+songs&lr=&cd=29#v=onepage&q=%22Shanandore%22&f=false