While the Diseases of Pigeons is attributed the various authors, it is mainly drawn from J.W. Dietz's work dating back to 1919. This booklet was originally published by Chas Siegel & Son, a popular pigeon supply house, in 1951 with the numerous changes that such a span of time would dictate in the field of medicine and disease. This issue, an again updated version, was printed in in1961. I am not sure if further updates were ever provided. After a brief introduction of the bird's physiology, it is very logically divided by the main type of diseases, including protozoan, bacterial, viral, fungi, parasites and more. This very rare manual is more for the understanding of the history of pigeon health in general than for today's application. The symptom description of course remain accurate today, while many of the treatments would with today's knowledge in the field not be apt. It does make one wonder what will be said of today's methods and practices a half century from now. Its very rarity places it on the list of the avid pigeon book collection