Vault, Inc.'s motto is "the most trusted name in career information." I don't know about the veracity of Vault's claim, but I can tell you that they do publish career information. This book is one of their publications.
Title: Vault Guide to the Case Interview.
Format: Pdf.
Author(s): Mark Asher, Eric Chung, and the Staff of Vault.
Publisher: Vault, Inc.
Pages: xv + 231.
Ebook Rating/Number of Reviews (Amazon): 4.0 (2); not rated at GoodReads, but the previous edition (2007) is rated 3.60 (5).
Price: $0.00.
Lowest Price at Amazon if available there: Paperback--$7.74 (used, acceptable); $131.20 (new).
Book Description (Amazon):
This best-selling guide provides the skinny on business frameworks, sample cases, guesstimates, brainteasers, and more! The Guide inclides [sic] more than 50 actual case interviews, guesstimates, brainteasers and other consulting interview cases. It also covers important framewoeks [sic] inclusing [sic] Porter's Five Forces, the capital asset pricing model (CAPM), the BCG Matrix, the four P's, and the four C's.
Comments: This is the 2008 edition. The book was made possible by the support of Gallup and Mitchell Madison Group, Global Management Consultants.
URL: http://www.cgu.edu/Include/drucker/c...Interviews.pdf.