The Alerion Express 19 sail badge
Gary Hoyt
Henkel, Steve: <i>The Sailor's Book of Small Cruising Sailboats</i>, page 20. International Marine/McGraw-Hill, 2010. <a href="//commons.wikimedia.org/wiki/Special:BookSources/978-0-07-163652-0" title="Special:BookSources/978-0-07-163652-0">ISBN 978-0-07-163652-0</a>