Floor and sail plans for two yawls, the Nirvana and the Valhalla, designed by John G. Alden in 1948 and built by the Henry R. Hinckley company in 1949-1950.
“Alden Yawls Nirvana and Valhalla,” Southwest Harbor Public Library, accessed November 22, 2024, https://demo.digitalarchive.us/items/show/11472.Item 15405
