See also http://www.astrobril.nl/1758Y1.html

This map figured in an article on Messier by Rafael Bachiller, director of the Observatorio Astronomico Nacional, that was published on April 22, 2009, on the website of the large Spanish newspaper " El Mundo" - http://www.elmundo.es/elmundo/2009/04/20/ciencia/1240238505.html

It is also on the dust cover of the book "The Fallen Sky - an intimite history of shooting stars" by Christopher Cokinos. The source however is not mentioned.