Langston Hughes was not "denied passage" as such. Why do we recirculate the same phrase?

As I searched information about Langston Hughes for the my recent short posts,
I kept finding the phrased "denied passage on a ship because of his colour"  or "denied ship"

This tidbit is posted and reposted as though they are all borrowing from each other.

It doesn't take much searching to find an actual source.  
In The Collected Works of Langston Hughes by Langston Hughes he says:
"if I had to work for low wages at dull jobs, I might  just as well see the world, so I began to look for work on a ship."  he signed to a ship in New York only to find this particular ship was tied up all winter, leaving him lots of time to write.  "I was the only Negro in the whole fleet" he wrote. 2

 Eventually he travelled to the Western coast of Africa and his travels in those ports make interesting reading.  Hughes returned "with a better understanding of the complexities of race and Africa's colonial rule..." according to Langston Hughes edited by Harold Bloom 1

In 1924 Hughes worked on a ship leaving New York for Europe.  He jumped ship in Rotterdam, Holland, and went to Paris where it seems he found a love for Jazz.  (Remember I mentioned there was another Renaissance among the Black intellectuals in Paris?)
Alain Locke joined him in Paris and the two set off to tour Italy.  Hughes' passport and money were stolen on the train, and he had neither money nor papers to book passage.  Locke left him a little money and continued on the tour. Langston Hughes thought working on a ship  would be the best way to get back to new York, "but none of the ships were hiring Blacks." 1

Hughes lived by his wits (and that's another interesting story) until finding a job on a ship with an all-black crew, finally returning to New York to find he was now well known for his poetry.

All day long at school I tell students this:  "don't just look for re-posts of something--go find the original source."

Sources (NOT MLA)
1) Langston Hughes, by Howard Bloom, New York, Broomhall, PA, Chelsea House, Northam, Roundhouse, 2003

2) The Collected Works of Langston Hughes, The Big Sea, vol 13, University of Missouri, September 2002,