In-N-Out owner Lynsi Snyder writes a book about the burger business

A book tracing the history of In-N-Out Burger by its president and owner promises to tell the inside story of the business. It says so in the title.

“The Ins-N-Outs of In-N-Out Burger,” by Lynsi Snyder, is due to be released on Oct. 17, just days before the fast food chain’s 75th anniversary. It is available for preorder from its publisher, Thomas Nelson, as well as Amazon and other booksellers.

The price of the 256-page book is $29.99 hardcover, according to the publisher, $20.99 for an audio version, and $14.99 for an eBook.

Snyder is the grandaugher of founders Harry and Esther Snyder, who opened the first In-N-Out drive-thru in Baldwin Park on Oct. 22, 1948. The company’s headquarters are now in Irvine.

The book’s description says it tells the official story about how three generations of her family built a thriving business and why its fans are wildly loyal.

Thomas Nelson is a subsidiary of HarperCollins that specializes in Christian content.

Proceeds from the book go to the In-N-Out Burger Foundation and Slave 2 Nothing, an organization set up by Lynsi Snyder, who also goes by Lynsi Snyder-Ellingson, and her husband Sean Ellingson to combat human trafficking and addiction.

In-N-Out is throwing a festival to mark its anniversary at the In-N-Out Burger Pomona Dragstrip. The event includes fundraisers for Slave 2 Nothing, including a concert with .48 Special, the In-N-Out “family band,” and a Battle of the Bands.

The chain is already the subject of a 2010 book, “In-N-Out Burger: A Behind-the-Counter Look at the Fast-Food Chain That Breaks All the Rules,” by Stacy Perman.