What is the book everyone refers to when attributing Bust halves?

Earlier this year when I shifted my focus from Lincolns to a Capped bust half year set, I was warned about "the fever". I didn't believe anyone when they said it won't be long before I'm in over my head. Well, that day has arrived and my fascination with Capped bust halves is out of control.
Is this it? Is that the reference everyone uses to do the O's and (R1, R5, etc.)... Or is there more than one? Which one is the gold standard? The size and price of that one seems excessive to me.

Is this it? Is that the reference everyone uses to do the O's and (R1, R5, etc.)... Or is there more than one? Which one is the gold standard? The size and price of that one seems excessive to me.


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www.brunkauctions.com
<< <i>I'm more or less looking for the simplest, quickest guide to making the attributions...I don't much care for the life history of every molecule in the coin sort of thing >>
3rd edition of Overton
In honor of the memory of Cpl. Michael E. Thompson
Another very useful book, especially if you have high grade pieces, is "The Ultimate Guide for Attributing Bust Half Dollars" by Glenn Peterson.
The fun book is "Bust Half Fever" by Edgar Souders. It offers great history and detailed information about the various dates. It is a "fun" book because you don't need it to attribute varieties, but it is on the shelf of most serious CBH colletors. Also...it's a great read.
Lane
See http://www.doubledimes.com for a free online reference for US twenty-cent pieces