August is a great month for free reading material. We'll be giving away a new book each weekday. Our next prize is Mint Condition: How Baseball Cards Became an American Obsession by Dave Jamieson.

Here's today's challenge topic: Tell us about a time you went above, beyond, and a little overboard to acquire something you were collecting. The 1987 Topps set, an autograph from each of The Beatles, first editions of every presidential memoir, stolen street signs from around your neighborhood—whatever you collect. The person with the most impressive story wins the book. Plus the comments should be rather entertaining.

We'll announce the winners of all this week's challenges on Monday. While you wait, take the Mint Condition quiz that Mr. Jamieson put together for us earlier this year.