Elizabeth Shown Mills' stunning book, Evidence!, provides the family history researcher with a reliable standard for both the correct form of source citation and the sound analysis of evidence. In successful genealogical research, these two practices are inseparable, and the author's treatment of this little-understood concept is nothing short of brilliant. This dual-track theme is introduced early on, and is best summed up in a few choice paragraphs from the introduction: "Successful research--research that yields correct information with a minimum of wasted time and funds--depends upon a sound analysis of evidence. Source citation is fundamental, but it is not enough. The validity of any piece of evidence cannot be analyzed if its source is unknown. Citing a worthless source is an effort that produces worthless results."