Relative Position of the Heart and Lungs
A view of the bronchia and blood vessels of the lungs, as shown by dissection, as well as the relative position of the lungs to the heart.
Lyman, H. M.; Fenger, C.; Jones, H.W.; Belefield, W.T. The Practical Home Physician and Encyclopedia of Medicine (Guelph: The World Publishing Company, nd) 160-161