Doc. Hollander was the man who taught all of us genetics, and the one who forced us to think.. This is a very informal history of the discovery written for the non-scientist of the various mutations and alleles of the common  pigeon.
By the way, even after these years, I still miss Doc and his letters.   The man was insightful, had a weird sense of humor, and knew more about genetics and pigeon genetics than I ever will.

Hollander, Willard F.,

SOME U.S. PIGEON SUPPLY COMPANIES

There are many other excellent pigeon books on the market - and some lousy ones. Many of these books are devoted to specific breeds, especially Birmingham Rollers and Racing Homers. Most can be purchased from the various supply houses which are listed below. I'm sorry, I don't know any suppliers outside the U.S., so you'll have to check with your local booksellers or pigeon supply companies.  I've linked each company to its site.

Siegel's Pigeon Supplies,

Global Pigeon Supplies;

J.E.D.D.'S Pigeon Supplies

BREEDING AND INHERITANCE IN PIGEONS by Axel Sell.

The most beautiful of all the genetics works presently in print. Color photos showing the mutations discussed are a great help.

PIGEON GENETICS - both English & German editions by Axel Sell.

TAUBEN: ZÜCHTEN MIT SYSTEM by Axel Sell

NOT SPECIFICALLY PIGEON RELATED

Dawkins, Richard, 1986, The Blind Watchmaker, W. W. Norton & Company.

Dawkins, Richard, 1989, The Selfish Gene (2nd ed.), Oxford Univ. Press.

Dawkins, Richard, 1995, River Out of Eden, Basic Books

Dawkins, Richard, 2005, The Ancestor's Tale, Mariner Books

Dawkins, Richard, 1997, Climbing Mount Improbable, paperback

Dawkins, Richard, 2010, The Greatest Show on Earth: The Evidence for Evolution, paperback  * If you only read one, this is it.

Gould, Stephen, 1980, The Panda's Thumb, W. W. Norton & Company

Lavers, Chris, 2000, Why Elephants Have Big Ears: Understanding Patterns of Life on Earth, St. Martin's Press, N.Y.

Wards, Peter D. 2006, Out of Thin Air: Dinosaurs, Birds, and Earth's Ancient Atmosphere John Henry Press

Shubin,Neil , 2009, Your Inner Fish: A Journey into the 3.5-Billion-Year History of the Human Body , Vintage

Weiner, Jonathan, 1994, The Beak of the Finch: A Story of Evolution in Our Time, Knopf